eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
16
10.21608/iceeng.2006.33484
33484
Original Article
SHIELDING PERFORMANCE OF SUPERCONDUCTING STRUCTURES
Mohamed Eleiwa
1
Ph.D., The Egyptian Armed Forces.
ABSTRACTElectromagnetic shielding is one of the most promising applications ofsuperconductors that still needs further investigation. An enhanced model is thereforeproposed to design optimum shielding structures made from different low and high criticaltemperature(LTS & HTS) superconductors. The proposed model incorporates classicalelectrodynamics with both superconductivity macroscopic theories such as two-fluid model,Ginzburg-Landau (GL) theory, and microscopic Bardeen-Cooper-Schrieffer (BCS) theory.Thermodynamic properties are also included using improved Gorter-Casimir relations basedon published experimental data. General shielding effectiveness expressions are derived fordifferent superconducting shielding structures against generally polarized incidentelectromagnetic waves. A computer algorithm is then developed to investigate the impact ofsuperconducting material parameters on shielding effectiveness. The limitations andadvantages of superconducting shielding structures are also discussed.
https://iceeng.journals.ekb.eg/article_33484_487483edcea543387f94c2b4c617768e.pdf
superconductors
Shielding Effectiveness
and Computer Modeling
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33497
33497
Original Article
COMPUTER MODELING FOR NUCLEAR AND LIGHTNING ELECTROMAGNETIC PULSE (EMP) PROPAGATION AND COUPLING
Mohamed Eleiwa
1
Ph.D., Egyptian Armed Forces.
ABSTRACTThis paper is primarily concerned with modeling EMP propagation and coupling todetermine the external electromagnetic fields about, and hence the induced voltages andcurrents in complicated systems such as aircrafts, missiles, satellites, vehicles, buildings etc.,under the illumination of Nuclear EMP (NEMP) or Lightning EMP (LEMP). Based on thetransmission line (telegrapher) equations, a numerical procedure is developed to determine thedistributed voltages and currents induced along the transmission lines exposed to NEMP andLEMP electromagnetic fields. The proposed procedure is applied to predict the EMPinteraction with practical configurations such as a combat vehicle, over head power lines andtelecommunication cables. The induced voltages are calculated and compared favorably withthe published results, and hence the accuracy of the proposed procedure is proven. Suchaccurate coupling model is necessary for application of vulnerability assessment andprotection techniques.
https://iceeng.journals.ekb.eg/article_33497_2ba110d73cddb6e77ec78ca4acc9a9e2.pdf
Electromagnetic Pulse
coupling
and Computer Modeling
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
15
10.21608/iceeng.2006.33499
33499
Original Article
SHIELDING CHARACTERISTICS OF AN INFINITELY EXTENDED CONDUCTING STRIP-ARRAY EMBEDDED IN MULTILAYERED DIELECTRIC CYLINDRICAL STRUCTURE
Elregaily A.
1
Mohktar M.
2
Allam M.
3
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
AbstractA plane wave excitation of an infinitely extended conducting strip-array embedded inmultilayered dielectric cylinder, as a shielding structure, has been studied. Based on theGreen’s functions, the integral equation is formulated for describing the current on aconducting strip-array. Using Galerkin's method, the surface currents on the conducting stripsare expanded in the form of series weighted Chebyshev polynomials of the first kind and theunknown coefficients are obtained by solving a resultant system of linear equations.The validity of the formulation and the accuracy of the numerical solution are demonstratedfor different array geometries. The numerical results depict the penetrated (near-zone) and thescattered (far-zone) fields for four different array geometries. Some of these results arecompared to the simulated results using Zeland Fidelity Workshop (ZFW), and a goodagreement was achieved.
https://iceeng.journals.ekb.eg/article_33499_4c51bd1107a07e6e96de49437cd3b26c.pdf
Multilayered shielding
TM-polarized plane wave
Galarkin’s method
penetrated field
scattered field
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
13
10.21608/iceeng.2006.33500
33500
Original Article
REGION OF INTEREST-BASED MEDICAL IMAGE COMPRESSION, WITH APPLICATION TO MRI BRAIN IMAGES
H. M.
1
M. Gadala
2
A. Ragab
3
Abdalla Ahmed
4
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
Cairo University.
ABSTRACTMRI Medical imaging produces human body pictures in digital form. Since these imagingmodalities produce incredible amounts of data, therefore, compression is necessary for storageand communication purposes. Many current compression schemes provide a very highcompression rate but with considerable loss of quality. On the other hand, in some areas inmedicine, it may be sufficient to maintain high image quality only in the region of interest,i.e., in diagnostically important regions. This paper discusses a hybrid technique for losslesscompression in the region of interest, with high-rate lossy compression in other regions. Suchtechniques are of great interest in telemedicine or medical imaging applications with largestorage requirements. In doing so, we are able to achieve a relatively high compression ratiofor the MRI images, while preserving the lossless contents of important regions. Anapplication to MRI Brain imaging with the special interest on tumor are presented.
https://iceeng.journals.ekb.eg/article_33500_f103566af665db67bee4fb52b4c3bb40.pdf
Lossless compression
Lossy compression
Region of Interest
and Telemedicine
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
6
10.21608/iceeng.2006.33501
33501
Original Article
MEASURING DEPTH OF ANESTHESIA USING BISPECTRAL ANALYSIS OF THE ELECTROENCEPHALOGRAM (EEG)
Essam M.
1
A. S.
2
Alian, M.
3
E. Gadallha
4
Graduate student, Biomedical Department, MTC, Cairo, Egypt.
PHD, Electronic Department, MTC, Cairo, Egypt.
Professor, Electronic Department, Modern Academy, Cairo, Egypt.
Professor, Biomedical Department, MTC, Cairo, Egypt.
ABSTRACTThe assessment of patient brain state during surgery has long been an objective of research in thefield of automated electroencephalogram (EEG), since EEG signals contain a wealth of informationabout brain functions, there are many approaches to analyzing EEG signals with spectraltechniques. In this paper the bispectral analysis was applied to EEG signals obtained from patientsunder general anesthesia by using BSA software (bispectrum analyzer software version 3.31B) [1-4]. The bispectral values (BIS) was normalized to 100 while awake and decreasing gradually to alevel between 0 and20 as the patient was anaesthetized. The clinical signs such as heart rate (HR)and blood pressure (BP) of the level of anesthesia were observed simultaneously. Conclusion, thebispectral analysis of EEG signals obtained from patients under general anesthesia gives accurateindex to measure depth of anesthesia.
https://iceeng.journals.ekb.eg/article_33501_890cecf21964bac72a21a5bbe33e58fb.pdf
Electroencephalogram
depth of anesthesia
Bispectral Analysis
Sedation
BIS index
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33502
33502
Original Article
MIDDLE LATENCY AUDUTORY EVOKED RESPONSE FOR MONITORING DEPTH OF ANESTHESIA USING FUZZY LOGIC SYSTEM
Essam M.
1
A. Elkfafi
2
S. Alian
3
Graduate student, Biomedical Department, MTC, Cairo, Egypt.
PHD, Electronic Department, MTC, Cairo, Egypt.
Professor, Electronic Department, Modern Academy, Cairo, Egypt.
ABSTRACTThe depth of anesthesia is generally considered adequate if the patient neither moves in response tosurgical stimulus nor shows any signs of autonomic reflexes. So the measuring of depth ofanesthesia is very important because it helps the anesthetist to monitor the anesthetic state of thepatient from the start of giving the anesthetic drugs up to the patient awareness and helps him tocontrol the required amounts of the anesthetic drugs during the surgery. The middle latencyauditory evoked response (MLAER) was seemed to be the most promising measure of DOA, whichis independent of the agent being used; the monitoring of DOA is complex and dependent on manyfactors, which vary between patients and operating procedures. Fuzzy set theory can be adapted forhandling complex and inexact knowledge (DOA). This paradigm seems to be suitable for medicalprocess, since it depends upon expert experiences which are not precisely quantifiable such aspatients' subjective sensations, interpretation of clinical signs and effects of instrumental accuracy.The aim of this paper is to extract significant features from the processed auditory evoked response(AER) signal using ARX model which, describing the changes in amplitudes and latencies ofMLAER waves and merging together using fuzzy logic to create a reliable index for DOA every 30sec.
https://iceeng.journals.ekb.eg/article_33502_260611f7e542a55ba9e33add21e06f65.pdf
Middle latency auditory evoked response (MLAER)
Depth of Anesthesia (DOA)
autoregressive with exogenous input (ARX model)
Fuzzy Logic System (FLS)
and auditory evoked response (AER)
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
16
10.21608/iceeng.2006.33504
33504
Original Article
Region of interest-based medical image compression with application to MRI brain image
Ashraf Elbayoumy
1
Simon Shepherd
2
Advanced Signals Laboratory, School of Engineering Design & Technology, University of Bradford, BD7 1DP, UK, ademahmo.
Advanced Signals Laboratory, School of Engineering Design & Technology, University of Bradford, BD7 1DP, UK, ademahmo.
Abstract:VoIP represents the future of digital voice communications and many carriers arepreparing for the VoIP revolution. However, a number of outstanding issues need to besettled. The most important are security, compression, packet size optimization, qualityof service and performance in heterogeneous networks. We have addressed all of theseissues [1,2,3,4] and here we summarise our key findings in each of these areas.
https://iceeng.journals.ekb.eg/article_33504_876e2b0d6ca434dda429261dd5675f27.pdf
VOIP
QOS
tea
AMR
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
8
10.21608/iceeng.2006.33505
33505
Original Article
An Implementation of the Run-Length Decode Algorithm using FPGA
Gouda Salama
1
Fawzy Hassan
2
Ramy Bahy
3
Sameh Ibrahim
4
Ph.D., Egyptian Armed Forces.
Ph.D., Egyptian Armed Forces.
M.Sc., Egyptian Armed Forces.
B.Sc., Egyptian Armed Forces.
Abstract:This paper presents a real time implementation of Run-Length Decode (RLD) using FPGA asone of image decompression algorithms. The RLD algorithm is the decoder of the Run-Length Encode. RLD can be implemented either on commercial DSP or as an ASIC but dueto the huge development in the FPGA field, it is recommended to use the FPGA technology.The design steps from design entry to files which are needed for the download process aredeveloped. Also, the method of testing the downloaded design is explained.
https://iceeng.journals.ekb.eg/article_33505_171d339fec91448316e4149af1791e7a.pdf
Run-Length Decode
FPGA
Image compression
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
12
10.21608/iceeng.2006.33506
33506
Original Article
SYMMETRIC KEY CRYPTOGRAPHY USING WINDOWSBASED GRID COMPUTING FRAMEWORK
Ahmed Serag Eldin
1
Ismail Abd Elghafar
2
Alaa Ahmed
3
Gouda Ismail
4
Department of Computer Science, Military Technical College, Cairo, Egypt.
Department of Computer Science, Military Technical College, Cairo, Egypt.
Department of Computer Science, Military Technical College, Cairo, Egypt.
Department of Computer Science, Military Technical College, Cairo, Egypt.
ABSTRACTThis paper deals with one of the most critical computing problems which is Cryptographyapplication, it is one of the problem that needs high computing power resources.This paper introduces Symmetric Key Cryptography using DES (Data Encryption Standard)algorithm and employs a computing Grid for dealing with this problem. It presents a Grid forsolving this problem that has been implemented by Alchemi which is an open source projectdeveloped at the University of Melbourne, which provides middleware for creating anenterprise grid computing environment by harnessing windows machines. The grid has beentested and results have been analyzed, there was an increase in performance over the singleprocessor, but the performance improvement is limited by the I/O and communicationoverhead.
https://iceeng.journals.ekb.eg/article_33506_8eee1e272a9fcf798347898d19bb833c.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
16
10.21608/iceeng.2006.33514
33514
Original Article
MULTI-AGENTS MODEL TO ENHANCE THE NAVIGATION PROCESS IN A VIRTUAL ENVIRONMENT
Ismail Abd-Elghafar
1
Khaled El-Menshawy
2
Ali Fahmy
3
ABSTRACTDue to the rapid evolution of graphics hardware, interactive Virtual Environment isbecoming popular on desktop personal computers. The use of the Virtual Environment as asimulation system becomes very important for certain types of applications, especially in thefields of education and entertainment. These synthetic environments are even more attractivefor the user when they exhibit dynamic characteristics. The most important problem of usingthe synthetic Environment is navigation process. The ability to navigate and interact in aVirtual Environment is essential for certain types of applications, such as virtual classrooms,on-line museums and games. Many 3D virtual environments, whether representing existingplaces or imaginary ones typically leave the user alone and partially or totally unassisted innavigating the environment Navigation process deals with the problem of findingpath/trajectory between two locations under some constraints. In this paper, a model of multiagentsis developed to enhance the navigation process and interaction with the users of thesynthetic Virtual Environment It describes how agents can work together to solve their task.Usually, this requires some kind of inter-agent communication.
https://iceeng.journals.ekb.eg/article_33514_b1ea623683a3582413695fc32b21c011.pdf
Virtual Environment
Multi agents
navigation
Virtual Reality Modeling Language (VRML)
avatar
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
25
10.21608/iceeng.2006.33516
33516
Original Article
Mobility Modeling Techniques
Mahmoud M.
1
Ismail Abd-Elghafar
2
Mohamed G.
3
Mahmoud Hassan
4
ABSTRACTPerformance is critical to the success of any software system, especially large and realtime ones. Performance for such systems should be predicted as early as in the requirementsanalysis and design phases of the development process and before code implementation. Thisis essential to save the investments of money and time. Several Software PerformanceEngineering (SPE) approaches have been proposed to predict and validate the performance ofsoftware systems from its architectural designs. Some of them have been applied successfullyto static (non-mobile) systems. Performance modeling and analysis of mobile systems is morecomplex than non-mobile ones. Although mobile systems are gaining more and morewidespread and importance, the means for their specification are still underdeveloped. Theobstacle that faces extending static software performance prediction approaches to be appliedto mobile systems is to find a way to model the mobility behavior of software components.In this paper, we are concerned with two performance prediction approaches that havebeen provided with mobility modeling techniques. This enables us to use them forperformance validation of mobile systems. The paper’s main focus is on presenting twomobility modeling techniques that were proposed for these two approaches in detail. Ourobjective is to study, analyze and compare them. The framework of each approach is alsopresented to see how both the technique and the approach fit together.
https://iceeng.journals.ekb.eg/article_33516_b3f75c3fc6e43ab1a838d70bba597de7.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
14
10.21608/iceeng.2006.33517
33517
Original Article
PERSONAL IDENTIFICATION SYSTEM BASED ON HUMAN IRIS RECOGNITION
Osama Hegazy
1
Phd. Computer Science Department, Cairo Higher Institute for Computers, Information and Management, Cairo Academy, Golf Region, Cairo, Egypt.
ABSTRACTThe biometric person identification technique based on the pattern of the human iris is a verycostly top secure application. This paper describes a personal identification system based onthe human iris imaging through providing a set of algorithms that describes image acquisition,image segmentation, feature extraction and pattern forming. For image acquisition, we presentan image enhancement algorithm in order to get more accurate image feature results. Inaddition, we propose a boundary localization algorithm, which used to find the pupilboundary. A new iris recognition method that analyzes local variations of the iris is used toconstruct a Feature Selection Vector (FSV) that can be used to extract features of any irisimage size. Extensive experimental results using Pearson's correlation coefficient to verifyone’s identity on CASIA iris images database shows that the proposed system is effective andencouraging.
https://iceeng.journals.ekb.eg/article_33517_c383be88c4a947d32ce4b1311ef1249b.pdf
Iris recognition
Biometric Identification
Image Segmentation
Pattern Recognition
Pearson's Correlation Coefficient
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
16
10.21608/iceeng.2006.33525
33525
Original Article
Binary Space Partitioning algorithm for the navigator agent in the Virtual Environment
Khaled Elmenshawy
1
Ismail Abd-Elghafar
2
Ali Fahmy
3
ABSTRACTVirtual environment can be brought to life by adding walking characters (navigator agent)to enhance the navigation process. The navigator agent helps the visitor to find specific locationsin the virtual environment. It is specialized in determining appropriate free and safe paths throughthe virtual environment, and can provide guidance to the user that tries to follow such paths. Pathfinding depends on a number of waypoints to be set out in the virtual environment. The navigatoragent receives an initiation message from the headquarter agent depends on the reaction of thewatching agent and sends a request to the navigation module to plan the shortest and safe path.This paper discusses the development of a real-time navigation algorithm for the navigator agentas a guide tour through the virtual environment. The algorithm is handled by two channels. Thefirst is the 3D Graph, which contains all nodes and path structure information. The second is theMotion Planning channel, which calculates the fastest route through the path structure from thecurrent position to a destination position. This algorithm is called Binary Space PartitioningAlgorithm (BSP). BSP divides the 2D map of the Virtual Environment into two configurations ormore depending on the start and destination locations, after that it generates two trees, one fromthe initial side (Tstart) and the second from the destination side (Tgoal). The navigator agent usesjoin algorithm to connect these trees together. A path is found when the two trees can beconnected. Finally, the navigator agent provides two choices for the user, the first one it draws agenerated path on the scene, then the user follow this path or, the second choice is the navigatoragent calls the animation algorithm to move on the path as a tour guide for the user. The time hasbeen taken to explore the virtual environment by using the Binary Space Partitioning algorithm isdecreased approximately by the half compared by the traditional motion-planning algorithms.
https://iceeng.journals.ekb.eg/article_33525_4e47ceaeb63208faf0c87f56d6d52718.pdf
Virtual Environment
navigator agent
watching agent
headquarter agent
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33529
33529
Original Article
Mobile Agent as a digital coin For clone detection and double spending prevention
Mostafa Salama
1
Mohamed Kouta
2
Mohamed Abu-Rizka
3
M. Sc. Engineer, Arab Academy for Science and Technology, Heliopolis, Cairo, Egypt.
Professor of computer sciences, Arab Academy for Science and Technology, Heliopolis, Cairo.
Professor of computer sciences, Arab Academy for Science and Technology, Heliopolis, Cairo.
ABSTRACTMobile agent and digital coin represent two growing technologies in E-Commercesystems. However, mobile agent systems suffer problems of cloning agents and theinability to detect the user who cloned the agent. While digital coin suffers a problem ofspending the same coin more than once i.e. double spending. Merging these twotechnologies into one scheme may solve such arising problems. Lam-Wei’s Scheme [1]proof that the double spending detect-and-accuse cloning algorithm in e-cash can be usedto detect-and accuse cloning offenders. The presented paper follows an opposite approachto this scheme as it implements a digital coin as mobile agent using some cryptographicconcepts. This proposed scheme implements an E-cash system that prevents the doublespending problem.
https://iceeng.journals.ekb.eg/article_33529_cba4ddce9fa428af4612a78d9e1197d4.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
7
10.21608/iceeng.2006.33530
33530
Original Article
DESIGN OF A 10-BIT NON-LINEAR INTERPOLATION DAC
Khaled Shehata
1
Saleh Eisa
2
Hani Fikry
3
Tarif Elshafiey
4
Professor, Electronics Departement, AASTMT, Cairo,Egypt.
T.A., Electronics Departement, AASTMT, Cairo,Egypt.
Professor, Electronics Departement, Ain Shams University, Cairo, Egypt.
Dr., Electronics Departement,MSA, Giza, Egypt.
ABSTRACTThis paper presents a novel design for a 10 bit DAC. The design is to be integrated in a directdigital frequency synthesizer (DDFS). The design consists of three main modules, a nonlinearcourse DAC, a linear fine DAC, and a nonlinear interpolation DAC. Each of these modulescontributes in enhancing the DAC performance. The DAC is then integrated, and simulatedusing Mentor Graphics Tools. The simulation was done using a 3.3V, 0.35u CMOStechnology. The design has an advantage over the published DACs in its simplicity andrepeatability. The design operates at higher output frequency with considerable spectralpurity.
https://iceeng.journals.ekb.eg/article_33530_bf82f853e6f575133b8355977f625566.pdf
CMOS
digital-to-analog converter
nonlinear digital-to-analog converter
Interpolation DAC
Direct Digital Frequency Synthesizer
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
26
10.21608/iceeng.2006.33533
33533
Original Article
Analysis Study of Path Rerouting And Handover Schemes for WATM/LEO Satellite Networks
A. HASSAN
1
A. ALMOGAZY
2
H. HEFNAWY
3
ABSTRACTOne of the major design issues in Wireless ATM and LEO satellite networks is thesupport of rerouting and handover schemes. The management of mobile terminalhandover and rerouting algorithms are the most technical challenges in the recentintegrated wireless /LEO satellite networks.Connection rerouting schemes must exhibit low handoff latency, maintain efficientroutes and limit disruption continuous media traffic while minimizing reroute updateprocess to the network switches.Fast and seamless handoffs are the two factors in the planning to enhance thePerformance Evaluation of the QOS for different mobile services.The objective of this paper is to analyze the different algorithms of connectionrerouting and handoff schemes used in wireless ATM networks and LEO satellitenetworks.The analysis of this case study creates a new vision for design implementationaspects, which improve the delay and QOS performance of the rerouting and handoffmethods used in integrated WATM /LEO satellite networks.
https://iceeng.journals.ekb.eg/article_33533_f66f180da4e82161d7b2e96e4381f351.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
11
10.21608/iceeng.2006.33534
33534
Original Article
HARDWARE REALIZATION OF DIGITAL WAVES USING ORTHOGONAL FUNCTIONS
Abbasi A.
1
Alamoud M.
2
Qasim M.
3
Department of Electrical Engineering, KSU, Riyadh.
Department of Electrical Engineering, KSU, Riyadh.
Department of Electrical Engineering, KSU, Riyadh.
ABSTRACTDifferent kinds of functions are required for today’s Electronics and Communicationapplications with very precise characteristics like frequency, phase, magnitude and waveformetc. A technique for Field Programmable Gate Array (FPGA) based hardware realization hasbeen developed for the design, implementation and prototyping of useful functions in digitalform. The technique makes use of the orthogonal functions like Rademacher and the Walshfunctions for the hardware realization. The FPGA based hardware realization of sinusoidal,triangular, and trapezoidal waveforms in their digital form has been demonstrated with goodresults. A comparative study of hardware realization of such functions targeted to variousFPGAs available from Xilinx has been made. It is concluded that virtually any periodicfunction may be realized directly in its digital form (without the need of Analog to Digitalconversion) with the help of FPGAs using orthogonal functions.
https://iceeng.journals.ekb.eg/article_33534_fbb5fc8b412732eb6d1350c397e3c044.pdf
Walsh Functions
Rademacher functions
hardware realization
Field Programmable Gate Array (FPGA)
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
20
10.21608/iceeng.2006.33535
33535
Original Article
Hybrid Key Management for Group Communications
Ahmed Abdel-Hafez
1
Ali Miri
2
Luis Orozco - Barbosa
3
Ahmed Abdel- Rahman
4
Egyptian Armed Forces.
School of Information Technology and Engineering University of Ottawa, Ontario, Canada.
School of Information Technology and Engineering University of Ottawa, Ontario, Canada.
Higher Technological Institute, 10th of Ramadan.
AbstractDue to the increased popularity of group oriented applications and protocols, securinggroup communications has become a critical networking issue and has received much attention inrecent years. A secure and efficient group key management protocol is the most fundamentalchallenge in group communication security. While key transport protocols may be appropriate forkey establishment in large networks, many collaborative applications require distributed keyagreement protocols. Proposals for key agreement protocols that have been published so far doesnot scale for large size group. In this paper we propose a novel framework for scalable keymanagement protocols in group communication, using both Key Agreement and Key transportprotocols. Our framework is based on a particular clustering of the members of the securecommunicating group into subgroups. We describe a protocol to achieve this clustering scheme.We describe the architecture and operation of this framework using GDH.2 as a building block.We show that our framework is scalable to large groups with frequent membership changes.
https://iceeng.journals.ekb.eg/article_33535_dbb7e254fc7494a5b2da0b4116c36cdf.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33536
33536
Original Article
Performance Analysis of Hybrid DS/SFH System Over AWGN Channel
Abdelmoneim Fouda
1
Ezz Farouk
2
G. Alshamari
3
Col. Dr.,
Lt. Col. Dr.,
Eng.,
ABSTRACTIn recent years, the trend in the spread spectrum communication systems is to use thecombined hybrid techniques. The use of a hybrid systems attempt to capitalize upon theadvantages of a particular method while avoiding the disadvantages. Many different hybridcombinations are possible; those are: DS/FH hybrid system, DS/time hopping hybrid system,FH/time hopping hybrid system, and DS/FH/time hopping hybrid system.In this paper, we will be concern on the DS/FH hybrid system that can combine theadvantages of both DS and FH while avoiding some of their disadvantages. This hybridsystem can combine the anti-multipath effectiveness of DS system with good anti-jammingand good anti-far problem features of FH systems. Moreover, the hybrid system has shortersignature sequences and hopping patterns, thus reducing the overall acquisition time. While adisadvantage of hybrid systems is the increased complexity of their transmitter and receiver.The paper presents general closed form of the system BER formula which will be derivedassuming non-coherent hybrid DS/SFH-SSMA over AWGN channel and employing MFSK.Moreover, the analysis is extended to include the derivation of the closed form of BER forboth the pure FH and pure DS SSMA. Then, the hybrid DS/SFH system performancemeasures is compared with the performance of both the pure DS-SSMA and the pure FHSSMAsystem subjected to the same channel conditions.
https://iceeng.journals.ekb.eg/article_33536_77cdf6db5ce68e6ddfbd237c4d815bcb.pdf
CDMA
Spread Spectrum
DS-SSMA
FH-SSMA
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
13
10.21608/iceeng.2006.33537
33537
Original Article
PERFORMANCE ANALYSIS OF TRELLIS CODED MODULATION SCHEMES WITH ASYMMETRIC QPSK IN LAND MOBILE SATELLITE FADING CHANNELS
Salah EL-Agooz
1
Gamal Abdel-Hamid
2
Amru Hafez
3
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
ABSTRACTThis paper is concerned with evaluating the performance of trellis coded modulationschemes with asymmetric QPSK when transmitted through a land mobile satellite channel.The channel exhibits fading and shadowing as well as additive white Gaussian noise. Fadingand shadowing cause both envelope and phase variations of the received signal. However, it isassumed that the effect of the fading on the phase of received signal is fully compensatedusing a pilot tone calibration technique. The paper provides an upper bound of pairwise errorprobability of TCM schemes with both asymmetric and symmetric QPSK modulations.Numerical results show that TCM with asymmetric QPSK provides better performance interms of bit error probability over TCM with symmetric constellations in Nakagami-mdistribution fading channel.
https://iceeng.journals.ekb.eg/article_33537_f1533a1d7260a6066e2c7659ca499a14.pdf
Trellis coded modulation
Land mobile satellite fading channel
Asymmetric QPSK constellation
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33540
33540
Original Article
AIRCRAFT RECOGNITION BASED ON ISODENSITY AND ORDINARY MOMENTS
A Somaie
1
Egyptian Armed Forces.+
AbstractThe ability to extract and describe the salient features represents the most difficult task ofthe aircraft recognition systems. In this paper, an aircraft recognition system based on theisodensity lines associated with the three-dimensional reflectivity of the model is illustrated.A recognition algorithm is described, which uses combination of 2-D moments in threedimensionalisodensity maps to represent the aircraft as a feature vector containing 2L elements.Using a distance-weighted k-nearest neighbour rule as a classifier, the algorithm achievesa highly recognition rate when applied to 336 test images that represent six aircraft models. Thesame procedures are applied using the first two components of invariant moments, and the firstsystem was found superior to this system with about 15% using the same number of isodensitylines.
https://iceeng.journals.ekb.eg/article_33540_80828b7bbc1a798b587d77865b0cb7df.pdf
Image processing
moment
Pattern Recognition
Computer Vision
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
13
10.21608/iceeng.2006.33541
33541
Original Article
Performance Analysis of Multicarrier DS-CDMA with Maximum Ratio Combining for Land-Mobile Satellite Channel
Salah El-Agooz
1
Gamal Abdel-Hamid
2
S. Shams El-dein
3
M.T.C., Kobry El-Koppa, Cairo, Egypt.
M.T.C., Kobry El-Koppa, Cairo, Egypt.
M.T.C., Kobry El-Koppa, Cairo, Egypt.
ABSTRACTTwo classes of multicarrier direct sequence code-division multiple-access are defined, namelyMultitone DS-CDMA and Orthogonal multicarrier DS-CDMA. Their performances are consideredover land mobile satellite channels with L-branch diversity using maximum ratio combiningtechnique. The average bit error rate for the two classes are investigated and compared usingcoherent binary phase shift keying modulation. It is assumed that the channel consists of Nakagamidistributed shadowed line-of-site signal plus Rayleigh distributed multipath signals. Usingmeasured channel parameters, the performance is evaluated for light, average and heavy shadowingand fading environments.
https://iceeng.journals.ekb.eg/article_33541_03c1c365d40d37805fd7375440f175fb.pdf
Orthogonal MC DS-CDMA
Multitone DS-CDMA
Land Mobile Satellite Channel (LMSC)
Maximum Ratio Combining (MRC)
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
13
10.21608/iceeng.2006.33543
33543
Original Article
THE EFFECT OF IMPERFECT SYMBOL TIMING ESTIMATION ON THE PERFORMANCE OF SPACE-TIME CODED SYSTEMS
Hazem Radi
1
Yahya Mohasseb
2
Ali Elmogazy
3
ABSTRACTThis paper addresses the effects of errors in symbol timing estimation on tperformance of space time coded systems. Fixed and uniformly distributed timing errors wdifferent variances are assumed. Furthermore, the improvement of timing estimates wincrease in signal to noise ratio is modeled to yield practical expectations of performanThis symbol timing–error is applied to a simple transmit diversity scheme using QPSK8PSK modulations. This paper could be useful guide for definition of requirement in symbtiming systems used in space time coding systems.
https://iceeng.journals.ekb.eg/article_33543_c7366d8e1094e5b5c3b63439c28dd83a.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
21
10.21608/iceeng.2006.33545
33545
Original Article
Performance Analysis of Strapdown Inertial Navigation Algorithms
Ahmed Azouz
1
Ezz Eldin Farouk
2
Ahmed El-Said
3
ABSTRACTIn this work the theory of strapdown inertial navigation is introduced. The strapdowninertial navigation algorithms using Euler angles, direction cosines, and quaternionsmethods are derived. Reference flow charts of strapdown INS algorithms for attitudecalculation based on Euler angles, direction cosines, and quaternions methods arederived.Simulation examples applied on the navigation of Aerosonde UAV.Simulation results are analyzed to explore the differences between the differentalgorithms to conclude the most reliable algorithm of strapdown inertial navigationalgorithms.
https://iceeng.journals.ekb.eg/article_33545_2e34819b551b0f087d2ba87ebe3ec9af.pdf
INS Inertial Navigation System
IMU Inertial Measurement Unit
RMS Root Mean Square
GPS Global Positioning Systems
DCM Direction Cosines Matrix
MEMS Micro-Electro-Mechanical Systems
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
24
10.21608/iceeng.2006.33547
33547
Original Article
DESIGN OF PIPELINED AES ENCRYPTION ALGORITHM USING FPGA
Alaa El Din Rohiem
1
Kamel Hassan
2
Ahmed El-Amin
3
ABSTRACT:In this paper, we present developed design procedures for a pipelined AdvancedEncryption Standard [AES] encryption algorithm using Field Programmable Gate Array[FPGA].The design procedures starting from entering the design parameters untilfunctional simulation and testing have been introduced in this paper. System throughputof 1.408Gbps has been achieved, whereas the published results for similar systems aremuch less than this rate [4-7].
https://iceeng.journals.ekb.eg/article_33547_7f7fa3321bd0c2f7949e6662872a8d44.pdf
FPGA
AES
VHDL
Encryption
decryption
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33548
33548
Original Article
Novel routing algorithm using a bi-directional bubble sort for non-Manhattan channel routing.
Khaled Shehata
1
Amr Bauymi
2
Waleed Abd El-Hameed
3
Tarif El-Shafiey
4
AbstractA non-Manhattan channel router uses fewer routing tracks than a Manhattan one.Many optimizations exist for the non-Manhattan channel routing to minimize thenumber of vias as well as the crosstalk between the layers [7, 8].In this paper, we propose a direct implementation of an optimal three-layer bubblesort-based non-Manhattan channel routing algorithm. This direct implementationminimizes the time complexity of the three-layer routing problem. We also implementa five-layer technique to reduce the channel height of our three-layer algorithmwithout affecting its time complexity.
https://iceeng.journals.ekb.eg/article_33548_43c8f651c90bda94f7845c5078a959f2.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
24
10.21608/iceeng.2006.33550
33550
Original Article
Design for Testability of Circuits and Systems; An overview
Emad Khalil
1
M. El-Mahlawy
2
Fawzy Ibrahim
3
M. Abdel-Azeem
4
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
ABSTRACTIntegrated circuits (ICs) are reaching complexity that was hard to imagine. ICs incorporatinghundreds of millions of transistors, mega-bit memories, complicated pipelined structures, etc.,are in high demand. Obviously, designing such complex circuits poses real challenges toengineers. Certainly, no relief comes from the competitive marketplace, with increasingdemands for a very narrow window of time (time-to-market) in engineering a ready product.Therefore, a systematic and well-structured approach to designing ICs to be testable is a must.With the growth in complexity of very large scale integration (VLSI) circuits, test generationfor circuits is becoming increasingly difficult and time consuming. Even though thecomputing power and resources have multiplied dramatically over last few decades, anincreasing number of memory elements in VLSI circuits require more effective and powerfulsequential test generators. This paper is represented to review concepts and techniques fortesting electronic circuits and systems as part of a lecture review.This covers various testing and design-for-test (DFT) techniques starting from (AutomaticTest Equipment) ATE basics (definition, construction and types). Exploring testing strategiesfor digital combinational and sequential circuits, and introduces a comparative study betweenthe common fault models. Finally the paper ends with design for testability guiding rules andpossible challenges and difficulties that need development and research in the testingproblem.
https://iceeng.journals.ekb.eg/article_33550_f4dc09fe590b17fe9cb191c0ee08fef7.pdf
Design-for-test (DFT)
Automatic Test Equipment
Testing of electronic circuits
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33552
33552
Original Article
FPGA HARDWARE IMPLIMENTATION FOR EXTERNAL MODEM INTERFACING
Islam AbouGindia
1
Khaled Shehata
2
M. Elkfafi
3
Military Technical College, Cairo, Egypt.
College of Engineering, Arab Academy for Science and Technology, Cairo, Egypt.
Military Technical College, Cairo, Egypt.
Abstract:Intelligent modems used in military messaging over IP networks require flow controlmechanism to prevent overflow of data into its buffers. We contribute for a complete flowcontrol mechanism with built in UART module. All modules are designed using VHDLdesign entry. All modules are simulated, synthesized then integrated, and downloaded on anFPGA. Timing Simulation results found to be matching with the hardware results obtainedfrom the logic analyzer.
https://iceeng.journals.ekb.eg/article_33552_a28d6884f5769522de854c93ab258b0d.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
5
10.21608/iceeng.2006.33553
33553
Original Article
Simulation of Circuits Including Non-linear and Dispersive Media
Mohamed Abd. El-Azeem
1
Associate Professor, Electronic Department, Military technical College, Cairo, Egypt.
AbstractThe TLM (SCN) algorithm has been modified to simulate structures which include non-linearand dispersive media. There are a wide variety of practical problems which include non-linearand dispersive media and these so far have not been fully simulated using TLM. Furthermore,all dielectric media possess some dispersion characteristics and these characteristics should beincluded if an accurate simulation is to be performed. We describe in this paper how the TLM (SCN)algorithm can be modified to include non-linear and dispersive media.
https://iceeng.journals.ekb.eg/article_33553_29ec18404f30793b79e2c95fc3f22f54.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33554
33554
Original Article
Modeling of Current-Voltage Characteristics of Deep Submicron MOSFET
AL-Kabbani, S.
1
Hassan, M.
2
Serag El-Deen, M.
3
Faculty of Engineering, Al-Azhar University.
Higher Institute of Technology, Benha University.
Faculty of Engineering, Al-Azhar University.
ABSTRACTOne of the deficiencies of many MOSFET models is that they are regional and can havediscontinuities at the boundaries between regimes. This causes problems for deriving theconductance in circuit simulation.In this paper, a physical one-dimensional MOSFET model is developed. Discontinuitiesbetween linear and saturation regimes are avoided using one-region closed-form equation forthe drain current. The strong inversion current-voltage (I-V) characteristics for submicron nchannelMOSFET which is suitable for circuit simulation and rapid process characterization arepresented. The model is also suitable as a starting solution for two-dimensional numericalmodeling.The resulting drain current is continuous over the entire operating range of the transistor. Thecalculated drain current is in agreement with publishing data using similar approaches.
https://iceeng.journals.ekb.eg/article_33554_8940083ade5d05422e30c066986ff76d.pdf
MOSFET
Current-voltage characteristics
Submicron semiconductor devices
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
14
10.21608/iceeng.2006.33556
33556
Original Article
NEW AUTOMATIC TESTING ARCHITECTURE FOR INTEGRATED CIRCUITS
Sherif Anas
1
Mohamed El-Mahlawy
2
Ehab El-Sehely
3
Al-Emam Ragab
4
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
ABSTRACTIn this paper, a complete example for BIST (Built-In Self-Test) boundary scan architectureand 16-bit multiplier as the CUT is presented. Adding BIST boundary scan capabilities to thedigital VLSI integrated circuit design makes the electronic card testable from five pins TMS,TCK, TDI, TDO and TRST* that is optional. The simulation and then design download arepresented on the Spartan Xilinx X2C100 chip. The hardware implementation is tested usingthe interfacing through the parallel port of the personal computer that supplies required fivecontrol pins. This approach will lead to the concept of the portable ATE (Automatic TestEquipment). All required test circuitry is embedded in the integrated circuits and the controlof the test circuitry is supplied from the TAP (Test Access Port) controller. Finally, the TAPcontroller is controlled from the parallel port of the personal computer. So, the personalcomputer is used as a master controller and the TAP controller is used as a slave controller.The presented idea of the new BIST testing architecture solves the testing problem of thedigital VLSI circuits using the traditional ATE.
https://iceeng.journals.ekb.eg/article_33556_372aa04045af64641c87e12d82328836.pdf
Design-for-test (DFT)
Automatic Test Equipment
Testing of electronic circuits
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
15
10.21608/iceeng.2006.33557
33557
Original Article
DETERMINATION OF THE GOODNESS OF FIT OF A DISTRIBUTION TO A SET OF EXPERIMENTAL DATA
Ashraf Aziz
1
Associate Professor, Electrical Eng. Dept., Military Technical College, Cairo, Egypt.
AbstractMany systems of interest involve phenomena that exhibit unpredictable variation andrandomness. For example, communication systems must provide continuous and error freecommunication over channels that are subject to random noise. Probability models are one ofthe tools that enable the designer to successfully build systems that are efficient and reliable.Processing of random signals postulates a probability model that is defined by the probabilitydensity function of the random signal. In this paper, we propose a method to determine thegoodness of fit of a distribution to a set of experimental data. The proposed method dependson the chi-square test. It is applied to different examples of different probability densityfunctions. The proposed method is proved to be efficient.
https://iceeng.journals.ekb.eg/article_33557_39ce8f8834ff045450357f1dba0498e2.pdf
Probability density function – Fit of a distribution to data – Probability models – Histogram of random variables
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
6
10.21608/iceeng.2006.33558
33558
Original Article
STUDY AND COMPARISON BETWEEN METHODS AND ALGORITHMS OF PULSE OXIMETER SIGNAL ANALYSIS
MOHAMED M.
1
SERRY B.
2
ABSTRACTNow a day Pulse Oximeter is a very important instrument in the surgical or intensivecare units, as it’s a very fast and real time indication to the blood oxygen saturationlevel, which gives an indication of the patient’s status. Its theory of operation mainlydepends on the phenomena of difference in the absorption of different wavelengthsby body tissues and blood constitutes. The raw Pulse Oximeter (plethysmography)signal undergoes a lot of processing to calculate the desired values of the BloodOxygen saturation .Many methods are employed either in time domain analysis orthrough frequency domain analysis. Each Method has its own advantage anddisadvantage. By combining all these methods into a hybrid algorithm of processingtaking into consideration the limitations and the most important advantages in eachmethod, it is applicable to have an accurate method of calculating the SaO2.
https://iceeng.journals.ekb.eg/article_33558_95899151cf40d03f6f90d6f2b6e952a0.pdf
Pulse Oximeter
FFT
Moving Average Technique
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
11
10.21608/iceeng.2006.33560
33560
Original Article
A NOVEL TESTING METHOD FOR MONOSTABLE MULTIVIBRATORS
Mohamed El-Mahlawy
1
Egyptian Armed Forces.
ABSTRACTSeveral authors focused on testing of digital integrated circuits and their different testscenarios are proposed. No author speaks about the testing of the monostable multivibrator onthe board. In this paper, a novel circuit design methodology is presented to test themonostable multivibrators functionally on the board. To test the monostable multivibratorsproperly, the time duration needs to be measured accurately. This method is based on thesignature generation of the output of the monstable multivibrators. The measurement of thetime duration is considered the signature that expresses the proper functionality of themonstable multivibrators. This testing design was implemented and applied to different pulsedurations. The experimental results indicate the high accuracy of the proposal designapproach. The measurements in the millisecond range had not any deviation from the settingpulse. The measurements in the microsecond range had small deviation from the setting pulse± 1%.
https://iceeng.journals.ekb.eg/article_33560_a305c20c413d637f0ac0b5de6619cb9b.pdf
Design-for-test (DFT)
Automatic Test Equipment
Testing of electronic circuits
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
12
10.21608/iceeng.2006.33561
33561
Original Article
FAULT DETECTION OF THE DATA DISPLAYING SYSTEM IN MARINE CENTERS
Emad Hamad
1
Mohamed Abd El-Rahman
2
Mohamed Nasr
3
Usama Sabbah
4
Post graduate student, Suez Canal Authority, Egypt.
Dr., Air Defense College, Alexandria, Egypt.
Professor, Electronics and Communication Department, Tanta University, Egypt.
Dr., Director of Planning and Researches Department, Suez Canal Authority, Egypt.
AbstractThis paper presents a comprehensive analysis of the vessel traffic management system(VTMS). It is shown that displaying system includes the signal state board, with its fourdriving boards, and station PC. Each driving board feeds one row. We show that, as anexample, Row 2 contains six (7 × 5dot matrix) modules and each dot has its own flipping coil.In addition, each driving board has 58 Darlington transistors. The address and data lines of theprocessor Z80180 are used to control the flipping circuit through decoders, addressablelatches, buffers and inverters. Interrupt circuit generates signal INT1which is used by theprocessor to switch off all transistors after each dot flipping process. We have built anassembly EPROM program to deal with the two assembly subroutines, activated by INT1andINT 2 interrupt signals, to detect faults associated with the flipping circuit transistors. Weperformed a new visual basic program(paper under publication) in the station PC to handlethe detected faults by EPROM program.This work is illustrated practically by tracingmeasured signals at different points for the example of short and open transistor.
https://iceeng.journals.ekb.eg/article_33561_4650998d61697f970a8adc0118ec0ad7.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33562
33562
Original Article
DESIGN OF BRUSHLESS DC POSITION SERVO SYSTEMS USING ADAPTIVE FUZZY CONTROLLER
A. Kamel
1
A. Abdalla
2
Air Defense College, Alexandria, Egypt.
Military Technical College, Cairo, Egypt.
ABSTRACTThis paper deals with brushless DC position control systems of unknown external loaddisturbances and plant parameter variations .Such systems have a very complex dynamiccharacteristics and highly nonlinearity, a conventional linear control design may not assuresatisfactory requirements. One promising method to improve the dynamic response of suchsystems is adaptive fuzzy controller (AFC) which has been proposed. The proposed AFC isinherently robust, and is based on simple rules that are derived from engineering andexperimental results. Simulation results show that the proposed approach can achieve accuratevelocity/position servo tracking in the presence of load disturbance and plant parametervariations. Excellent flexibility and adaptability as well as high precision and good robustness arealso obtained by the proposed strategy.
https://iceeng.journals.ekb.eg/article_33562_365f4a7f9fec3114433b1c4db9c181fd.pdf
Brushless DC- Adaptive fuzzy controller (AFC)- Performance measure (PM)
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
11
10.21608/iceeng.2006.33564
33564
Original Article
Effect of Damping Constant and Rotor Inertia Constant On One- Dimensional Ring Power System Electromechanical Wave Propagation
W. Sabry
1
Abstract:This paper completes the previous work that introduced the analysis of theelectromechanical wave propagation that follow a disturbance occurring at anymachine in the one-dimensional ring power system model. The analysis isperformed for the varying of damping constant (D) and rotor inertia constant(M) of the system machines. The continuum principle, which considered for thepower system leads to a set of nonlinear partial differential equations (PDE). So,the discretization concept was applied in this paper. MATLAB package is usedto carry out the simulation. From which, some of the wave propagationparameters are calculated. Simulation results in different situations are presentedand discussed. These results present and show the important effect of dampingconstant and rotor inertia constant on one-dimensional ring power systemelectromechanical wave propagation.
https://iceeng.journals.ekb.eg/article_33564_d9d77868637bca4eb48a9a4ee2f701bf.pdf
Electromechanical wave propagation
damping constant
rotor inertia constant
one-dimensional system and continuum system
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
7
10.21608/iceeng.2006.33565
33565
Original Article
A Comparison between Optimal and Conventional Power System Stabilizers for a Single Machine to an Infinite Bus Power System
W. Sabry
1
A. Eliwa
2
H. Hassan
3
M. Talaat
4
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
AbstractThe excitation control of synchronous generator in a single machine to an infinitebus (SMIB) power system is very important to improve the stability modes ofpower system. In addition to the usual or conventional excitation control techniquesand speed governors, other devices proved its effectiveness to enhance bettersystem stability like power system stabilizers (PSS) and static VAR compensators(SVC). In this paper, the PSS is used as an additional device to improve the SMIBpower system stability. Two out of different control strategies were used; aconventional control technique (PI controller) and a linear optimal controller(LOC). A comparison between both types of PSSs was stated. The contribution ofthis paper is the design and application of an optimal-PSS and a PI-PSS to asynchronous generator connected to an infinite bus power system.
https://iceeng.journals.ekb.eg/article_33565_9ba648447af112a40d10a1d0a917e588.pdf
Single machine to an infinite bus
Power System Stabilizer
Excitation control
PI controller
linear optimal controller
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
14
10.21608/iceeng.2006.33567
33567
Original Article
MULTIOBJECTIVE OPTIMISATION OF SWITCHED RELUCTANCE MOTOR USING FUZZY-GENETIC-SIMPLEX ALGORITHM
Amged El-Wakeel
1
Dr., Assistant professor, Electrical Power and Energy Department, MTC, Cairo, Egypt.
ABSTRACTThis paper presents a new method for multiobjective optimisation of a switched reluctancemotor. Four objective functions regarding motor efficiency, power factor, torque ripples andouter volume are considered. The proposed method combines fuzzy logic, genetic algorithmand simplex technique as a general global optimisation technique. The new technique issearching for the best compromise solution, which maximises the designer total degree ofsatisfaction. In order to predict the motor performance accurately , a hybrid FEA-analyticalsimulation model has been adopted. The model combines some of the FEA accuracy with thesimplicity of analytical model. A full time stepping FEA analysis for the optimised motor hasbeen done to verify the final design of the motor.
https://iceeng.journals.ekb.eg/article_33567_d21cc4870b822947ed9f31954de09b02.pdf
Switched Reluctance Motors
Fuzzy Logic
Genetic Algorithms
Optimisation Methods
Finite Element Analysis
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
7
10.21608/iceeng.2006.33568
33568
Original Article
Electrical Breakdown at Sessile Water Droplets on Insulating Surfaces Subject to High AC Stress.
H. Gouda
1
Dr., Electrical Power and Energy Department, MTC, Cairo, Egypt.
ABSTRACTElectrical breakdown at the edges of sessile water droplets on a horizontal, insulating surfacesubject to high AC electrical stress has been studied experimentally. The behaviour of thewater droplets under these conditions has been examined using a high-speed video cameraand by detecting electrically partial discharge activity. Different modes of droplet vibrationhave been observed, some of which lead to transient changes in droplet contact angle at theinsulator surface with concomitant changes in the electric field in the vicinity of the triplejunction. These field effects have been calculated and their significance on partial electricaldischarges discussed. Lateral spreading of water droplets has also been observed. It isconsidered this spreading is associated with the vibration and with the partial dischargeactivity.
https://iceeng.journals.ekb.eg/article_33568_c302a8e9a89008c1ae353e455655e3e2.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
8
10.21608/iceeng.2006.33569
33569
Original Article
MODELING AND TESTING OF COMPUTER DISTANCE RELAY USING COMPUTER SIMULATION
Abdel Rahman Khatib
1
Assistant Professor at Shorouk Academy, Cairo, Egypt.
ABSTRACTThe paper presents modeling and testing of computer distance relay using MATLAB/PSCAD.The relay has been tested in 345 kV parallel overhead transmission lines that include themutual coupling. The paper is demonstrating the relay’s capability to detect the fault atdifferent zones, producing a tripping output for different fault conditions. The concepts oftraditional distance relaying were used and three zones were defined for the transmissionsystem to be protected by the relay. Different fault types were simulated occurring at distinctlocations within the transmission system. The computer relay is developed using MATLABand the transmission line model is implemented using EMTDC / PSCAD.
https://iceeng.journals.ekb.eg/article_33569_6c835fb3d0e2305de04f13bc771979ae.pdf
Distance mho Relay
PSCAD
Relay Model
protection
and MATLAB
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33570
33570
Original Article
PID and FLC Comparison Study on Position Control of Permanent Magnet Stepper Motors
Hamdy M.
1
M. Zaher
2
A. Kotb
3
A. Lect., Al-Azhar University, Tel: 0103584601.
Professor, Electric Eng. Dept, Dean Of Alazhar Faculty of Engineering.
Professor, Electric Eng., Alazhar-University.
AbstractStepper motors are found in three main types; Permanent Magnet, Variable reluctance andHybrid stepper motors. This paper concerns with the study of response of the PM steppermotors using different two types of controllers. The position tracking of the PM steppermotor is investigated on open loop and then PID and FLC are used to modify the open loopresponse. The stepper motor is simulated with application of controllers using MATLABsoftware. Controller is used to improve the motor performance by reducing the rise time,minimize overshoots and eliminate the steady state error. The results show the advantages ofFLC over the conventional PID controller.
https://iceeng.journals.ekb.eg/article_33570_9d58f28a25a7a009d0ba90c4a8c2aff1.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33621
33621
Original Article
TUNING PID CONTROLLER FOR LOAD FREQUENCY CONTROL USING PARTICLE SWARM OPTIMIZATION TECHNIQUE
H. Mostafa
1
Lecturer, Faculty of Industrial Education, Suez Canal University, Suez, Egypt.
ABSTRACT:This paper describes the application of Particle Swarm Optimization (PSO) technique tooptimize a PID controller parameters for Load Frequency Control (LFC). The robustness of theproposed controller is investigated through parameters variations and changing the magnitude ofload disturbance. The simulation results show that the applied PSO-based PID controller isachieved good performance even in the presence of the generation rate constraint (GRC). Acomparative study results is made between the H∞ controller and the proposed one. Theperformance is shown to be better for the new PID controller
https://iceeng.journals.ekb.eg/article_33621_6be3011037d1d16cc667619691f84191.pdf
Load frequency control
PID control
Particle Swarm Optimization
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
11
10.21608/iceeng.2006.33622
33622
Original Article
DAMPING POWER SYSTEM OSCILLATIONS USING PARTICLE SWARM-BASED CONTROLLER
Adel Emary
1
H. Mostafa
2
M. El-sharkawy
3
K. Yassin
4
National Energy Control Center of Egypt.
Faculty of Industrial Education, Suez Canal University.
Electrical Power & Machines Dept., Ain-Shams University.
National Energy Control Center of Egypt.
ABSTRACT:In this paper, the Particle Swarm Optimization (PSO) technique is used to develop acontroller for damping power system oscillations. The speed deviation Δω and its rate ofchange•Δω are selected as input signals to the proposed controller. The objective is to getoptimal gains values of the controller within pre-specified limits to improve the systemdynamics.In order to ensure the reliability of the PSO based controller, a comparison has been madebetween the effect of the developed controller and that of an ℋ∞ controller on the dynamicperformance of a single machine connected to infinite bus. The simulation results show thatthe PSO-based controller offer effective damping to system oscillations in a wide range ofoperating conditions and system parameters.
https://iceeng.journals.ekb.eg/article_33622_10ff577e772669a020e1600a196ed1f0.pdf
Power System Stabilizer
Particle Swarm Optimization
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
7
10.21608/iceeng.2006.33624
33624
Original Article
An Integrated Approach for Probabilistic Assessment of Ionized Fields of HVDC Lines
Mohamed Abouelsaad
1
Ibrahim El Shair
2
Ihab Ghariany
3
Associate professor, Faculty of Engineering at Shoubra, Benha University, Shoubra , Cairo, Egypt.
Professor, Faculty of Engineering, Ain-Shams University, Cairo, Egypt.
Graduate student, Ministry of the Interior, Cairo, Egypt.
ABSTRACTAn integrated statistical approach, based on Monte Carlo simulation, is developed in thispaper for probabilistic exposure assessment under HVDC transmission lines. The validity andadequacy of traditional, deterministic, models for HVDC ionized fields have been repeatedlyquestioned in literature. The present work recognizes the probabilistic nature of the exposurevariables, electric field intensity and ion current density, and caters for their inherentuncertainties in order to simulate the realistic dc line environment . Randomness in the factorsinfluencing the ionized field quantities is identified and accounted for, namely, the windspeed, the line sag, the corona onset gradient, and the location of objects under the line. Basedon an overall probabilistic approach, the integrated influence of these factors on the exposureparameters is evaluated and assessed.
https://iceeng.journals.ekb.eg/article_33624_d7bb4afff6d65d09fdca3b5ed12655a5.pdf
Probabilistic methods
DC ionized fields
Uncertainties
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
15
10.21608/iceeng.2006.33625
33625
Original Article
FIELD ANALYSIS AND EQUIVALENT CIRCUIT ARAMETERS OF DISC-ROTOR INDUCTION MOTOR
M. Ahmed
1
A. Kotb
2
M. Zaher
3
Al-Azhar University, Faculty of Engineering, Cairo, Egypt.
Al-Azhar University, Faculty of Engineering, Cairo, Egypt.
Al-Azhar University, Faculty of Engineering, Cairo, Egypt.
AbstractThe disc-rotor induction motors come in a variety of structures such as double-sidedstator, single-sided stator with iron backing rotor, and single-sided stator without ironbacking rotor. This paper presents the field analysis of the disc-rotor induction motorusing two-dimension analysis of magnetic field. The computational treatments arebased on the solution of field equations written down in cylindrical coordinates. Thisanalysis is carried out using the vector potential, which is shown to be readilyadaptable to the evaluation of the air-gap impedance for different disc motorconstructions. The magnetic vector potential enables the effect of physical air-gap andfinite permeability and conductivity of a number of machine regions to be taken intoaccount. Using this new technique, the complex expression of the impedance can berearranged to predict the individual equivalent circuit parameters.
https://iceeng.journals.ekb.eg/article_33625_b8692bc5541fd6d5c935b831cc574e20.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33627
33627
Original Article
A SOFTWARE PROGRAM FOR HARMONIC IDENTIFICATION USING GENETIC ALGORITHM
Sherif Amer
1
Hosam Youssef
2
M. Abdel Aziz
3
National Energy Control Center (NECC).
Member, IEEE., Electric power and machine Dept., Faculty of Engineering, Cairo University, Egypt.
Senior Member, IEEE., Electric power and machine Dept., Faculty of Engineering, Cairo University, Egypt.
ABSTRACTThis paper introduces a software program written in Matlab programming language for theidentification and analysis of harmonics in power systems using the Genetic Algorithm (GA) asan optimization technique. The program overcomes a major pitfall of the Fast Fourier Transform(FFT); the spectral leakage. Simulated waveforms were used to test the program. The resultsobtained were in the form of the Fourier series (magnitudes and phases) with high accuracy.
https://iceeng.journals.ekb.eg/article_33627_1ff199bf1b7b4ea895a12fb3ed3697bb.pdf
Harmonics
Genetic Algorithm
FFT
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33630
33630
Original Article
A Binary Particle Swarm Optimization for Optimal Placement and Sizing of Capacitor Banks in Radial Distribution Feeders with Distorted Substation Voltages
Tamer Khalil
1
Hosam Youssef
2
M. Abdel Aziz
3
Canal Co. for Electricity Distribution, Ismailia, Egypt.
Member, IEEE., Electric power and machine Dept., Faculty of Engineering, Cairo University .Egypt.
Senior Member, IEEE., Electric power and machine Dept., Faculty of Engineering, Cairo University .Egypt.
ABSTRACTThis paper proposes a binary particle swarm optimization (PSO) for optimal placement andsizing of fixed capacitor banks in radial distribution lines with nonsinusoidal substationvoltages. The objective function includes the cost of power losses and capacitor banks withconstraints which include limits on voltage, total harmonic distortion (THD) and sizes ofinstalled capacitors. A binary PSO applied to a test system and solutions of the binary PSOare compared with those of heuristic numerical algorithm that is based on the method of localvariations. Computer simulation shows that the harmonic components affect the optimalcapacitor placement and sizing.
https://iceeng.journals.ekb.eg/article_33630_aba997ece6281353a06b788178e2a01b.pdf
Capacitor placement
binary particle swarm optimization
Harmonics
Power flow
capacitor sizing
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
8
10.21608/iceeng.2006.33632
33632
Original Article
FUZZY LOGIC – BASED CONTROLLER with PI COMPENSATOR in SERVO POSITIONING CONTROL SYSTEM
Said Gawish
1
A. Kamel
2
Modern Academy for Engineering , Former Head of Electrical Engineering Departments, Military Technical College, Cairo, Egypt .
Air Defense College, Alexandria, Egypt.
ABSTRACTMany types of drives used in positioning systems need high performance controllers to achievegood dynamic performance in the presence of system uncertainty and complex environment.Traditional control schemes like PID can not meet these requirements. On the other hand, aconventional fuzzy logic controller can usually control a nonlinear system more efficiently, andprovide better performance than PID controllers in terms of shorter rise time and smaller overshot. Unfortunately, the traditional fuzzy logic controller cannot improve the steady stateperformance for time varying systems. To overcome this drawback, the integral of the error of thesystem is taken in consideration. This paper presents a hybrid of the conventional PI compensatorwith fuzzy logic controller to improve steady–state and dynamic accuracy of the servo positioncontrol system. The results obtained indicate that the proposed controller has an excellentposition tracking performance compared with both traditional PID controller and fuzzy PDcontroller.
https://iceeng.journals.ekb.eg/article_33632_367863536ddfe3d81b03245e5c676aa5.pdf
PID Controllers
Fuzzy logic controller- PI compensator- Fuzzy PD controller
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33633
33633
Original Article
APPLICATION OF INTERVAL METHODS TO UNCERTAINTY ANALYSIS OF HVDC TRANSMISSION LINES FIELDS
Mohamed Abouelsaad
1
Associate professor, faculty of Engineering at Shoubra, Benha University-Cairo-Egypt.
ABSTRACTUncertainty is a major issue facing electric utilities in planning and decision making.Modeling uncertainty can be based on two general approaches. The first is a probabilisticapproach where probability distributions for all of the uncertainties are assumed. The secondapproach is called “Unknown but Bounded” in which upper and lower limits on theuncertainties are assumed without probability distributions. Interval mathematics provides atool for the practical implementation and extension of the unknown but bounded concept. Thecalculation of HVDC transmission lines fields is used as an example to illustrate the use ofinterval mathematics. Ground- level electric field values are calculated using the traditionalsingle point numbers as well as interval numbers. Various geometries for monopolar andbipolar dc lines are considered. The values from the two methods are compared to prove thevalidity of interval analysis to, practically, model uncertainties associated with HVDCtransmission lines field analysis. Procedures devised to reduce the width of the resultinginterval bounds either through rearranging the governing expressions or through derivation ofinterval probability are discussed.
https://iceeng.journals.ekb.eg/article_33633_c8bd7acb62d07be33fb714b8811286b8.pdf
uncertainty
interval mathematics
HVDC Transmission Lines Fields
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
11
10.21608/iceeng.2006.33635
33635
Original Article
An Assessment between Classical Fuzzy and Fuzzy Model Reference Learning Controller Design of Electro-Optical pointing and tracking System
G. Elnashar
1
T. Elbayoumi
2
A. Eldsoky
3
M. Hegazy
4
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
ABSTRACTElectro-optical pointing and tracking systems (EOPTS) have a wide range of military andcivilian applications. The passive line of sight (LOS) stabilization systems are multi-inputmulti-output (MIMO) systems that are highly nonlinear and possess a strong coupling effectbetween their states. it presents a challenging systems to control. In this paper the analysis ofthe passive (EOPTS) stabilization system with the development of its nonlinear models isderived. Two different types of control algorithms are presented. The first controller is aclassical fuzzy control. The controller presents a good technique that proves to be stable withhigh transient and tracking performances. The controller is applied to the LOS stabilizationsystem and the simulation results are introduced. Next, A Model Reference Learning fuzzyController less dependant on the designer knowledge of the LOS stabilization system isproposed. Such controller possesses a learning mechanism that is able to form its rule-base bywatching the system behavior. The learning mechanism utilizes a reference model thatdescribes the desired performance. The designed process of the controller and simulationresults of implementing the controller to the system is introduced. Finally, comparativeanalysis between the two developed controllers is conducted. It discusses the advantages anddisadvantages of each controller algorithm.
https://iceeng.journals.ekb.eg/article_33635_547ee63433afff56c69ab15b0077e072.pdf
Multi input multi output (MIMO)
Fuzzy control
Fuzzy Model reference learning control (FMRLC)
LOS stabilized system
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33637
33637
Original Article
A COMPARISON BETWEEN ROBUST AND FUZZY CONTROLLER DESIGN OF A GYRO STABILIZED ELECTROOPTICAL SIGHT SYSTEM
G. Elnashar
1
T. Elbayoumi
2
A. Eldsoky
3
M. Hegazy
4
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
ABSTRACTIn modern fire control systems, Line of Sight (LOS) stabilization plays anessential and crucial part. LOS stabilization systems have a wide range of military andcivilian applications. Their importance arises from the critical applications that employthese systems. Two techniques are used for the LOS stabilization systems, passive andactive. The passive LOS stabilization systems are easy to design and are manufacturedat a relatively low cost to be interfaced with different types of electro optical systems.Hence, it can be used to increase the efficiency of many armored vehicles serving in thearmed forces, where it may be used for constructing fire control systems. The passiveLOS stabilization systems are multi-input multi-output (MIMO) systems that are highlynonlinear and possess a strong coupling effect between their states. It presents achallenging system to control.In this paper the analysis of the passive LOS stabilization system with thedevelopment of its nonlinear mathematical model is derived. Two different types ofcontrol algorithms are presented. The first controller is a Linear Quadratic Gaussiancontroller (LQG). The controller presents a conventional control technique that provesto be stable with high transient and tracking performances. The controller is applied tothe LOS stabilization system and the simulation results are introduced. Next, anintelligent fuzzy controller is introduced. The fuzzy control presents a nonlinear controltechnique that compensates the system's nonlinearity; hence, it is more appropriate tostabilize and control the system under consideration. The fuzzy controller is designed todecouple the relationship between the system state variables. The controller'sperformance is verified through simulations and results.
Finally, comparative analysis between the two developed controllers isconducted. It discusses the advantages and disadvantages of each control algorithm.
https://iceeng.journals.ekb.eg/article_33637_19c0743cc2137eab87daf124a55f6275.pdf
Multi input multi output (MIMO)
Fuzzy Model reference learning control (FMRLC)
LOS stabilized system
non linear control
LQG/LTR.
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
13
10.21608/iceeng.2006.33639
33639
Original Article
STABLE NONLINEAR PREDICTIVE CONTROL FOR FAST CONSTRAINED SYSTEMS
Ahmed Youssef
1
Egyptian Armed Force.
ABSTRACTDespite the good properties that the Nonlinear Quadratic Gaussian Predictive Control(NLQGPC) technique offers such as the low computational burden and the high performancewhen dealing with models with fast dynamics and input constraints, it suffers from unprovenstability properties. In this paper, the recently introduced Control Lyapunov Function basedsatisficing approach is combined with the NLQGPC approach. This renders guaranteedasymptotic stability whilst retaining the good properties of the NLQGPC.
https://iceeng.journals.ekb.eg/article_33639_a5a95b7ade9603708e1fd4a145bed104.pdf
State-Dependent
Nonlinear Quadratic Gaussian Predictive Control
Satisficing
Control Lyapunov Function
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33640
33640
Original Article
COMPUTATIONAL ERRORS OF ANALYTIC COARSE ALIGNMENT FOR STRAP DOWN INERTIAL NAVIGATION SYSTEM (SDINS)
Y. Elhalwagy
1
I. Arafa
2
K. Mostafa
3
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
ABSTRACT:In this paper, two proposed computational methods of coarse alignment for strapdown inertial navigation systems (SDINS) are presented. Their associated drift, skew,and scale alignment errors are evaluated analytically. Although the computationalformulas for analytic ground alignment are identical in the ideal case, the errorcharacteristics are dependent upon the employed basis. With properly selecting thebasis to compute the best estimate of transformation matrix, the drift misalignmentangles of analytic alignment can be made to be equivalent to those, which can be foundby physical gyro-compassing.
https://iceeng.journals.ekb.eg/article_33640_d1b59f17f287a68cd33361b3fd2bc45a.pdf
Inertial sensors
Inertial navigation system
strap down systems
alignment and error analysis
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
12
10.21608/iceeng.2006.33642
33642
Original Article
STRAP DOWN INS ALIGNMENT USING NON-LINEAR MODEL FOR LARGE AZIMUTH MISALIGNMENT
Y. Elhalwagy
1
I. Arafa
2
Ahmed Youssef
3
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
Abstract:In this paper a general non-linear psi-angle approach that dose not requires coarsealignment is presented. In the psi-angle model, the azimuth misalignment angle is assumedlarge. The attitude and velocity error models are also presented for strap down inertialnavigation system (SDINS). Three different KALMAN filter algorithms are utilized based onthe SDINS nonlinear error model are used to solve the non-linear data fusion problem. Theproposed works are validated with a set of experimental results of stationary alignment andin-flight alignment using kinematics trajectory data to estimate all the parameters of inertialnavigation system needed for the alignment and calibration.
https://iceeng.journals.ekb.eg/article_33642_e4319610f8229ee33f84560b9e33795b.pdf
Inertial sensors
Inertial navigation system
strap down systems
alignment and error analysis
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33644
33644
Original Article
DESIGN OF AN ORBIT OF A MINI SATELLITE
A Somaie
1
Wael Badawy
2
Rahim Pira
3
Egyptian Armed Forces.
University of Calgary, Department of Electrical and Computer Engineering, Calgary, Canada.
University of Calgary, Department of Electrical and Computer Engineering, Calgary, Canada.
AbstractThe aim of this paper is to present the basic mathematical and theoretical knowledge of theorbit geometry system of the satellite. Information about the orbit of the satellite system isconsidered as the critical and main parts of the satellite design. The presented design model of theorbit geometry is valid for mini satellites (100-500 kg), which are used for imaging missions. Theobjective of the design model is to minimize the size, the mass, and the complexity of the satelliteso that it fits the envelope of the launching vehicle. The propulsion system and others equipmentsof the satellite as the payload or the imaging system, on board computer system, data link and thesolar cells determine the size and mass of the satellite. An example of orbit geometry for asatellite was described included the results of the design model.
https://iceeng.journals.ekb.eg/article_33644_06dc1af59b4a18136bd3565ea1317ac1.pdf
Geometry
orbit control
satellite technology
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
14
10.21608/iceeng.2006.33652
33652
Original Article
FROM THE PHOTOGRAPHIC CAMERA TO AN ELECTRO-OPTICAL IMAGING SYSTEM
A Somaie
1
Naser El-Sheimy
2
Ziad Abusara
3
Mehdi Dehghani
4
Egyptian Armed Forces.
University of Calgary, Department of Geomatics Systems, Calgary, Canada.
University of Calgary, Department of Physics and Astronomy, Calgary, Canada.
University of Calgary, Department of Physics and Astronomy, Calgary, Canada.
AbstractThe photography camera and a video camera system have used in many purposes froma hand camera to space imaging system. This paper is concerned to upgrade thephotography camera that used for survey or surveillance applications. A direct method is toreplace the film magazine and the shutter by a Charge Couple Device (CCD). Since themost of these photographic camera systems have a big size, in which the adapted CCDdetectors are hard to be available or assembled. An alternative new technique will bedescribed through this paper to upgrade the photography camera to an electro-opticalimaging system. An example was applied to illustrate the upgrading procedures, and manyexperiments were done using survey photographic camera and the results weresuccessfully.
https://iceeng.journals.ekb.eg/article_33652_062311a9a4972be23ebbb39d0dd900c9.pdf
Electro-Optical Detectors
Photographic Camera
Digital image processing
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
14
10.21608/iceeng.2006.33654
33654
Original Article
Anti-Tank Guided Missile Performance Enhancement Part-1: Hardware in the Loop Simulation
M. Abd-Altief
1
G. El-Sheikh
2
M. Dogheish
3
Graduate Student in Guidance and Radar Department, MTC, Cairo, Egypt.
Prof. in Electronics and Electrical Communication Department, MSA University, Cairo, Egypt.
Asc. Prof. in Electronics and Electrical Communication Department, MUST, 6th October, Cairo, Egypt.
Abstract The performance of antitank guided missile systems is measured through the minimum missdistanceand its capability to overcome target maneuver and different sources of errorsincluding disturbances and noises. Toward these performance constraints, the guidance andcontrol is considered which is one of the most interesting and challenging problem areas forantitank missile. Therefore, this paper considers an antitank guided missile system belongingto the first generation for the design and analysis. The design and analysis necessitatessomehow accurate model (objective of Part-1 of the paper) for the system and a robust controldesign philosophy (objective of Part-2 of the paper).Transfer functions representing the missile-control system dynamics in pitch and yaw planesare identified via hardware in the loop simulation and considered for investigation andvalidation against previous work and reference flight data [13]. This investigation includesexperiment design, on-line identification procedure, and evaluating the identified controlsystem (Jetvator) model within the 6DOF simulation such that the performance requirementsare achieved. The results show how the hardware in the loop simulation with systemidentificationlead to accurate model with clear effect upon enhancing the system performancewhich gave the green light for the next step of robust controller design.
https://iceeng.journals.ekb.eg/article_33654_4f4d47809206a728beb0293f641ef037.pdf
Guidance and Control
Hardware-in-Loop Simulation
system identification
Robust Control
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
13
10.21608/iceeng.2006.33655
33655
Original Article
Anti-Tank Guided Missile Performance Enhancement Part-2: Robust Controller Design
G. El-Sheikh
1
M. Abd-Altief
2
M. Dogheish
3
Prof. In Electronics and Electrical Communication Department, MSA University, Cairo, Egypt.
Graduate Student in Guidance and Radar Department, MTC, Cairo, Egypt.
Asc. Prof. In Electronics and Electrical Communication Department, MUST, 6th October, Cairo, Egypt.
AbstractThe performance of antitank guided missile systems is measured through the minimum missdistanceand its capability to overcome target maneuver and different sources of errorsincluding disturbances and noises. Toward these performance constraints, the guidance andcontrol is considered, which is one of the most interesting and challenging problem areas forantitank missile. Therefore, this paper considers an antitank guided missile system belongingto the first generation for the design and analysis. The design and analysis necessitatessomehow accurate model (objective of Part-1 of the paper) for the system and a robust controldesign philosophy (objective of Part-2 of the paper).Transfer functions representing the missile-control system dynamics in pitch and yaw planesare identified via hardware in the loop (HWIL) simulation and considered for investigationand validation against previous work and reference flight data. These transfer functions areobtained and justified in Part-1 of the paper and consequently this part is devoted to design arobust controller and implements it within the 6DOF simulation. The jetvator control loop forboth pitch and yaw channels of the intended guided missile system with compensationnetwork are designed using ∞ H and investigated such that the system is stabilized and theperformance requirements are satisfied with disturbance rejection and measurement noiseattenuation. To stay on the robustness of these controllers and their ability to withstandagainst disturbances, the measurements are corrupted with noise and the system performanceis investigated. The obtained results showed superior features of ∞ H in stabilizing the systemwith only one controller allover the flight envelope and withstand some of the uncertaintysources.
https://iceeng.journals.ekb.eg/article_33655_db3c93c339cb831ad95d9cfb9e0901b3.pdf
Guidance and Control
Hardware-in-Loop Simulation
system identification
Robust Control
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
12
10.21608/iceeng.2006.33658
33658
Original Article
SYNTHESIS AND ANALYSIS OF NONLINEAR PREDICTIVE CONTROL FOR DIFFERENT PLANT REPRESENTATIONS
Ahmed Youssef
1
Y. Elhalwagy
2
Egyptian Armed Force.
Egyptian Armed Force.
ABSTRACT:A ducted fan has been constructed at California Institute of Technology, in order to provide anexperimental test-bed for research and development of different control techniques forUninhabited Combat Aerial Vehicles (UCAVs). It has many of the characteristics of existingflight control systems and its identification experiments have shown that its model is correctnear hover and successful control designs also support this conclusion. This paper presents acomparison between the application of one of the nonlinear Model Based Predictive Controltechniques (MBPC), which is called Non-Linear Quadratic Gaussian Predictive Control(NLQGPC), to two different representations of the ducted fan hover model. The paper alsoprovides an insight into the strengths and weakness of each algorithm and into the types ofproblems, which limit the applicability of those algorithms.
https://iceeng.journals.ekb.eg/article_33658_7b5a662e4c640872cf44e2c52184ce62.pdf
Model Based Predictive Control (MBPC)
Non-linear Quadratic Gaussian Predictive Control
State-Dependent
Linearization Around Trajectory (LAT)
Flight simulation
Caltech ducted Fan
Uninhabited Combat Aerial Vehicles (UCAVs)
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33660
33660
Original Article
AUTONOMOUS UNDERWATER VEHICLE ROBUST CONTROL
G. Elnashar
1
Egyptian Armed Forces.
ABSTRACTThis paper discusses the autonomous underwater vehicle (AUV) control performanceunder uncertainty using two different methods, linear quadratic (LQ) servo with commandfollowing and sliding mode control (SMC). In spite of the uncertainty in our evaluations ofthe hydrodynamic forces, it is fortunate that the use of feedback control is able to compensatefor this general lack of knowledge and to provide commands to actuators that control andstabilize the motion of underwater vehicles. Robustness is obtained by using feedback of keymotion variables (wind, waves, and current) as measured by sensors to drive actuators which,in turn, manipulate the vehicle's motion so that changes in the behavior of the vehicle can beautomatically compensated. In order to successfully recover or launch a vehicle it will bepreferred for the vehicle to have the capability to compensate for this motion. This paperattempts to investigate a means by which a vehicle may be made to track, in depth, thedynamic motion for launch and recover at some significant depth below the surface. Designtechniques for robust controllers typically use frequency response or state space techniques tospecify control gains and even include observers and model based compensators to replacemissing sensors with virtual sensors. While these techniques have definable robustnessproperties, sliding mode control and (LQ) servo with command following - techniques thatcan compensate for known nonlinear behavior - are convenient and has equally definablerobustness properties.This paper conducts robust control using (LQ) servo with command following andsliding mode control (SMC) which have been found useful and convenient in dealing with theuncertainty and general nonlinear nature of the models developed previously.
https://iceeng.journals.ekb.eg/article_33660_38bc4238d7828656a6065d24a3c2f74e.pdf
Autonomous underwater vehicle
Robust Control
LQ servo command control
Sliding Mode Control
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33662
33662
Original Article
Position Control of Flexible Manipulator Using Nonlinear H∞ with State-Dependent Riccati Equation
A. SHAWKY
1
A. ORDYS
2
M. GRIMBLE
3
Egyptian Armed Forces.
British Energy Senior Lecturer in Control Systems, Industrial Control Centre, Dept of Electronic and Electrical Engineering, University of Strathclyde, 50 George Street, Glasgow, G1 1QE,Scotland, U.K.
Professor of Industrial Systems and Director, Industrial Control Centre, Dept of Electronic and Electrical Engineering, University of Strathclyde, 50 George Street, Glasgow, G1 1QE,Scotland,UK.
AbstractThe paper is concerned with the control of the tip position of a single-link flexible manipulator. The non-linearmodel of the manipulator is derived and tested, assuming the number of model shape functions is two. It isknown that the Assumed Modes Method introduces uncertainty to the model by neglecting higher orderdynamics. There are other sources of uncertainty, such as friction. In addition, the model is non-linear.Therefore, for the next task, which is the controller design, the H∞ approach is proposed to deal efficiently withuncertainties, and the non-linear nature of the problem is addressed by the use of State Dependent RiccatiEquation (SDRE) technique. Following the SDRE approach, the state-feedback non-linear control law isderived which minimizes a quadratic cost function. This solution is then mapped into the H∞ optimizationproblem. The resulting control law has been tested with the simulation model of the flexible manipulator andthe results are discussed in the paper.
https://iceeng.journals.ekb.eg/article_33662_63ebad1885e11fc994ff817c1f4adf5a.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33663
33663
Original Article
THERMAL IMAGING RADIOMETER OVERALL PERFORMNCE PARAMETERS AND ITS PROBABILITY OF TARGET DISCRIMINATION
H. ELSHEIKH
1
I. ABD-ELDAYEM
2
S. MOWAD
3
ARMED FORCES.
ARMED FORCES.
EL-EPOUR TECHNOLOGY INSTITUTE.
ABSTRACTThe minimum resolvable temperature difference (MRTD) is the overall performanceparameter of any thermal imaging radiometer (TIR). MRTD combine the sensitivityand resolution of the TIR. It accurately describes the interrelationship for a particularTIR. MRTD is used especially tactically oriented (fire control and targeting)organizations, as the primary performance measure and is used with a target andatmospheric parameters to give a probability of target discrimination. This paper isdirected toward constructing a software program for the calculation and plotting theMRTD and a probability of target discrimination. These parameters can be used as atutorial or a procedure to determine how well TIR parameters perform in overallimaging system scenario for particular targets, backgrounds, atmospheric conditionsallowing a quick evaluation of the TIR in different environments.
https://iceeng.journals.ekb.eg/article_33663_a3571e634e070b2fdba562e479fef71d.pdf
Thermal imaging radiometer
sensitivity
Resolution
Minimum resolvable temperature difference and Probability of object discrimination
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33665
33665
Original Article
SIMULATION OF AN ACTIVE RADAR HOMING MISSILE UNDER PHASE-FRONT DISTORTION JAMMING
ALADIN ASSISI
1
Ass. Prof., Egyptian Armed Forces.
ABSTRACTIn this paper we introduce a complete modelling and simulation of both target and missiletrajectories in one plane with and without the effect of phase front distortion jamming.Although the missile guidance is done in two independent perpendicular planes, thesimulation process in the other plane will be identical to that included in this model. Besides,the time variation of different variables in the missile radar guidance system are computedand displayed, to monitor the system performance along the missile trajectory starting fromthe missile launch up to the impact point. The impact is defined here as the time instant whenthe rate of variation of the relative speed measured by the missile radio fuse crosses the zerovalue. This is the same definition adopted by the radio fuse system. The missile-target rangeat this instant is calculated and displayed as the final miss-distance. Without such asimulation, it is not possible to evaluate an angular deception technique and optimize itsparameters; since the instantaneous effect of angle deception will be recovered by theproportional navigation guidance system and the only criterion of jamming effectiveness isthe final miss-distance [1]. The simulation program is written as an m-file to be run inMATLAB environment.
https://iceeng.journals.ekb.eg/article_33665_04a3a1ecc751d6cfc07ed601e14c60a5.pdf
Target
Missile
impact point
radio fuse
miss-distance
jamming effectiveness
guidance
Phase front distortion
induced angular error
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33667
33667
Original Article
INVESTIGATION OF RESTORATION TECHIQUES FOR REMOTE SENSING SATELLITE IMAGERY
Fawzy Hassan
1
Gouda Ismail
2
M. Ibrahim
3
Esam Hamza
4
Ph.D., Egyptian Armed Forces.
Ph.D., Egyptian Armed Forces.
Prof. Dr., Egyptian Armed Forces.
B.Sc., Egyptian Armed Forces.
Abstract:This paper introduces implementation of some image restoration techniques, which canbe applied for satellite images. These techniques are, inverse filter, iterative method, wienerfilter, regularized deconvolution filter and wavelet-based method. The restoration techniquesare applied on several satellite images associated with atmospheric turbulence blur at differentvariance of additive noise to check the performance of each technique and its capability torestore the degraded image as close as possible to the original image. Also, comparisonstudies between these techniques are introduced based on measures like Peak Signal-to-NoiseRatio (PSNR) and Root Mean Square Error (RMSE). The experimental results show that: thewavelet method is the most suitable restoration technique for satellite images, since it giveshigh PSNR and small RMSE with respect to the other restoration techniques.
https://iceeng.journals.ekb.eg/article_33667_8c77cbbb2b0e156fe69db68d4c17a7da.pdf
Image restoration
Remote Sensing
Image blur models
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
12
10.21608/iceeng.2006.33669
33669
Original Article
ANALYSIS OF THE DESIGN PARAMETERS OF A REMOTE SENSING SATELLITE OPTICAL SENSOR
Fawzy Hasan
1
Mahmoud Mahmoud
2
Ibrahim Abdel Dayem
3
Adel El-Nozahy
4
Mohamed Abdel Hady
5
PhD., Egyptian Armed Forces.
Assoc. Prof., Banha High Technology Institute, Banha, Egypt.
PhD., Egyptian Armed Forces.
PhD., National Laser Institute, Cairo University, Giza, Egypt.
BSc., Egyptian Armed Forces.
ABSTRACT:In this paper, the various parameters that affect the design of the optical sensors used inremote sensing satellites are analyzed. The effects of these design parameters on thespatial resolution of remote sensing satellites are discussed. A simulation of a telescopedesign is implemented using Zemax package.
https://iceeng.journals.ekb.eg/article_33669_9c4ca556ba2d0e9722fc1558e741fa28.pdf
optical sensors
spatial resolution
telescope design
Zemax package
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
13
10.21608/iceeng.2006.33671
33671
Original Article
PERFORMANCE IMPROVEMENT OF THERMAL IMAGES
Gouda Salama
1
Mohamed Ghoneimy
2
Wael Yousf
3
Abstract This paper describes and evaluates a number of techniques for reducing different types ofnoises which associated with the thermal images. These techniques are based on optical imagefiltering in both spatial domain and frequency domain. Filtering in both spatial domain andfrequency domain are applied on different thermal images associated with three standardnoises models encountered in most images as additive, multiplicative, and impulse noiseswith different variance. Also, Non-uniformity correction techniques are applied on severalthermal images associated with Fixed Pattern Noise (FPN). The algorithms have been testedby using several real image data from existing infrared imaging systems with good results.Measuring criteria for performance evaluation of thermal images enhancement techniques asPeak Signal-to-Noise Ratio (PSNR), Signal-to-Noise Ratio (SNR) and Root Mean SquareError (RMSE) are used to ensure the vision observation of user to select the most suitabletechnique with highly performance evaluation.
https://iceeng.journals.ekb.eg/article_33671_5320099a7a6314d5d1e5ba5232edee5b.pdf
Thermal imagery
Image enhancement
Filtering
non-uniformity correction
performance evaluation
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
22
10.21608/iceeng.2006.33672
33672
Original Article
GEOMETRIC CORRECTION OF REMOTE SENSING SATELLITE DIGITAL IMAGES USING MAPPING POLYNOMIAL OF DIFFERENT ORDERS
Fawzy Hassan
1
Gouda Salama
2
Esam Hamza
3
H. Hussien
4
Ph.D., Egyptian Armed Forces.
Ph.D., Egyptian Armed Forces.
B.Sc., Egyptian Armed Forces.
Ph.D., Egyptian Armed Forces.
Abstract:All remote sensing imagery, from satellites, is inherently subjected to geometric distortions.Therefore geometric corrections, as preprocessing operations, are normally required prior toimagery analysis and extraction of information.This paper conducts geometric correction procedure of sample of raw satellite images usinggeoreferenced images (image-to-image registration) of the same area. In this procedure, manywell-distributed ground control points (GCPs) pairs (from both images) are identified. Then aproper transformation polynomial is applied to map the original image GCPs coordinates into thenew georeferenced image GCPs coordinates. A resampling process is carried out to recalculatethe gray level values for pixels in the transformed output image (new pixels locations) based onpixel values in the input image. Also, this paper presents an analysis study of the effect ofvariation of the number of GCPs and the order of the mapping polynomials on the accuracy ofgeometric correction process. The Root Mean Square Error (RMS), at the selected GCPs, arecalculated and used as a measure of accuracy of the obtained results.
https://iceeng.journals.ekb.eg/article_33672_71bd1ec2726370c903225800ab67b5ea.pdf
Remote sensing satellite imagery
Geometric correction
Image registration
Ground control points
Resampling
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
14
10.21608/iceeng.2006.33674
33674
Original Article
DESIGN OF AN ITERATIVE IMAGE RESTORATION ALGORITHM USING FPGA
Fawzy Hassan
1
Gouda Ismail
2
Esam Hamza
3
Ph.D., Egyptian Armed Forces.
Ph.D., Egyptian Armed Forces.
B.Sc., Egyptian Armed Forces.
Abstract:Programmable logic is emerging as an attractive solution for many digital signal processingapplication. This paper presents an FPGA implementation of an iterative image restorationtechnique. The simulation results show the speedup that can be achieved by implementing thisalgorithm on reconfigurable hardware as compared to the implementation of the algorithmusing software. The process from design entry to files download are introduced.
https://iceeng.journals.ekb.eg/article_33674_94447ab564b5f6ad4393cb043f572ab9.pdf
Iterative algorithm
FPGA
Image restoration
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
11
10.21608/iceeng.2006.33675
33675
Original Article
JOINT DEINTERLEAVING/IDENTIFICATION OF RADAR PULSES USING MATRIX DIFFERENCES
Hossam Hassan
1
Khaled Moustafa
2
Egyptian Armed Forces.
Egyptian Armed Forces.
ABSTRACTA radar Electronic Support Measures (ESM) system performs two functions, warning ofimpending emitters and surveillance to determine the radar activities. Automatic radar ESMsystem consists of a passive radar receiver which receives emissions from other platforms,measures the parameters of each received pulse and a deinterleaver that sorts the interceptedpulses to enable determination of the individual radar parameters. Theses parameters arecompared with the stored parameters of known radars to identify the intercepted emitter type.Consequently the threat level and the optimum jamming program for the intercepted emittercould be derived. This paper proposes a new approach to deinterleave the intercepted pulsesand identify their corresponding radars in one step. The proposed approach can successfullyidentify radars whose angles of arrival are very close. Moreover, the proposed approach canbe applied as an integral part of the adaptive deinterleaving algorithm to prevent the ESMfrom taking actions against false radars and consequently, avoids a waste of the availableresources. Computer simulation results have shown that the proposed approach cansuccessfully deinterleave radar pulses and identify their corresponding radars.
https://iceeng.journals.ekb.eg/article_33675_bd0440b3b4919388b0d84a962dfcb250.pdf
Passive radar
deinterleaving
ESM (Electronic Support Measures) system
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33676
33676
Original Article
DETECTION OF SINUSOIDAL SIGNALS IN FREQUENCY DOMAIN
Fathy Ahmed
1
Khairy Elbarbary
2
Abdel Rahman Elbardawiny
3
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
ABSTRACTPeriodogram is a simple and efficient way to detect and estimate parameters of sinusoidalsignals. In this paper, we evaluate the detection performance of the periodogram and itsvariants such as Bartlett, Welch methods, and a proposed Bartlett-based method. Performanceevaluation through the Receiver Operating Characteristics (ROCs) of the mentioned methodsare presented and compared. Previous studies showed that, the standard periodogram used togive the best detection performance. In the present work, analytical derivation and simulationresults showed that, the proposed method gives a better detection performance outperformingthe standard periodogram at the expense of tolerable reduction of the frequency resolution.
https://iceeng.journals.ekb.eg/article_33676_829e70662eec50b7e62211ebbc037778.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33677
33677
Original Article
Performance of phase Coded Radar for Detection of Stealth Targets
Fawazy Hamama
1
Khairy Elbarbary
2
Military Technical College, Cairo, Egypt.
Military Technical College, Cairo, Egypt.
Abstract:The stealth technology has been made to reduce the radar cross section (RCS) of the target toa level where the echo reflected from it can not be detected by the radar receiver. There aremany techniques to reduce the RCS, the most useful ones are shaping of the taget and coatingit with absorbing materials. Coats of absorbing material over metallic surfaces, cansubstantially reduce the energy of a returned signal. In this paper we evaluate the performanceof two classes of signals to deal with stealth point targets, namely the nonsinusoidal radarsignals and pulse compression signals. The target response depends on, time delay ofabsorbing material, waveform of radar transmitted signal and coding pulses. Matched filterare used for detection of various target responses. The autocorrelation function, represents adelayed version of of the matched filter output, is determined analytically for various types ofthe transmitted signals. It is shown that the proper choice of the transmitted signal durationrelative to the absorbing material time delay can improve the stealth target detection process.In case of fast rate phase coded signals the autocorrelation functions for stealth targets aresimilar to those of conventional point targets.
https://iceeng.journals.ekb.eg/article_33677_3a16c5e62b6510537d3dc19e22b5732d.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
11
10.21608/iceeng.2006.33679
33679
Original Article
A SURVEY of IFF SYSTEMS
Alaa Fahmy
1
K. Moustafa
2
Assoc. Prof. Dept. of Electrical Engineering, Military Technical College, Cairo, Egypt.
Assoc. Prof. Dept. of Electrical Engineering, Military Technical College, Cairo, Egypt.
ABSTRACTSince Second World War, different military standard modes of SecondarySurveillance Radar (SSR) were developed, namely, Mark X, Mark X IFF SelectiveIdentification Features (SIF), Mode S, and Mark XII. All these modes of operationshave different interrogation and reply signals format. This paper review SSR modesof operation. In the mean time, Mark XII is highlighted. An encryption techniquebased on the use of chaotic map is proposed.
https://iceeng.journals.ekb.eg/article_33679_3bdc8a99bf6f694902a4ff80ce4747c0.pdf
IFF
and cryptography
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33680
33680
Original Article
Cryptosystem Based On 2-D Chaotic Maps
Alaa Fahmy
1
Assoc. Prof. Dept. of Electrical Engineering, Military Technical College, Cairo, Egypt.
ABSTRACTChaos is one of the recent sciences that have great applications in the field ofcryptography. Baker map is one of the most popular two dimension (2-D) chaotic mapthat been used to construct a cryptosystem. Moreover, a proposed hybridcryptosystem has been introduced with examples of two test images. This proposedcryptosystem provides large key space, produces the same results of other chaoticmaps with less number of iterations, reduces the encryption time, and producescomplex permutation mechanism.
https://iceeng.journals.ekb.eg/article_33680_48d1e7fafb58c3fcc8ff2231dd82774a.pdf
Chaos
and cryptography
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33681
33681
Original Article
A PROPOSED ARCHITECTURE FOR STREAM CIPHERS USING LFSR AND FCSR
N. Shaker
1
K. Shehata
2
T. Elshafiey
3
A. Alshobaki
4
Comsec. Consultant.
Prof. AAST, Cairo – Egypt.
Assisted Prof., MSA, Cairo – Egypt.
Graduate student, AAST, Alex. – Egypt.
ABSTRACTA major class of applied stream cipher systems makes use of combining a number of LinearFeed Back Shift Registers (LFSR) to achieve reasonable cryptographic specifications. TheFeed back with carry shift register (FCSR) is a new device to be used in the structure ofstream ciphers in addition to or as a substitute for the LFSR. In this paper, we investigate theadvantages and limitations of combining both LFSR and FCSR in one stream cipher design.A proposed novel design for a stream cipher architecture – using both LFSR and FCSR –will also be introduced and its cryptographic specifications will be evaluated.
https://iceeng.journals.ekb.eg/article_33681_cb6001646b460efb9b0bf63414531710.pdf
Encryption
Stream Cipher
Linear Complexity
2-adic Complexity
Algebraic Degree and Correlation Immunity
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
7
10.21608/iceeng.2006.33682
33682
Original Article
Real Time Implementation Of A Matched Filter For Radar Applications Based On Wave Digital Filters
K. Moustafa
1
Alaa Fahmy
2
Egyptian Armed Forces.
Egyptian Armed Forces.
AbstractBased on the theory of wave digital filters (WDFs), new model is derived to representmatched filter for radar applications, derived from lumped/distributed laddernetworks. This model contains lumped elements and commensurate transmissionlines. This paper also introduced a real-time implementation of the proposed model.We will demonstrate that this approach can be implemented in real time, althoughwith this prototype the frequencies are too low for practical radar applications. Thereal-time implementation is performed based on input/output data acquisition cardusing MATLAB, SIMULINK toolbox, Real-Time Workshop (RTW) toolbox andReal-Time Windows target (RTWT) toolbox. In addition, real-time windows targetrequires the Watcom C/C++ compiler.
https://iceeng.journals.ekb.eg/article_33682_d6016213b8ab98f1740c8ce813c90681.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33684
33684
Original Article
REAL-TIME IMPLEMENTATION OF A NEW RADAR SIGNAL PROCESSOR BASED ON THE TIME-FREQUENCY APPROACH
K. Moustafa
1
H. Hassan
2
Egyptian Armed Forces.
Egyptian Armed Forces.
AbstractAlthough the number of ways of describing a given signal is countless, the most importantand fundamental variables in nature are time and frequency. While the time domain functionindicates how the signal’s amplitude changes over time, the frequency domain function tellshow often such changes take place. The bridge between time and frequency is the Fouriertransform. One of the important applications of time-frequency transform is the detection andextraction of a radar signal immersed in noise jamming. In this paper a new technique dealingwith improvement of radar performance under jamming conditions is presented. This newtechnique of time-frequency processing with non-linear threshold level is applied to a chirpradar pulse imbedded in a high level noise. A software program is built using MATLABprogram.This paper also introduced a real-time implementation of the proposed model. The real-timeimplementation is done based on input/output data acquisition card using MATLAB,SIMULINK toolbox, Real-Time Workshop (RTW) toolbox and Real-Time Windows target(RTWT) toolbox. In addition, real-time windows target requires the Watcom C/C++compiler.
https://iceeng.journals.ekb.eg/article_33684_9f161d8d4e2492541b83eef9b7091a84.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33685
33685
Original Article
Efficient Uses of FPGAS for Hardware Implementation of Data Encryption Standard
Aly Salama
1
Fawzy Aly
2
M. Nabil.
3
Professor, Faculty Of Engineering, Cairo University, Giza, Egypt.
Egyption Armed Forces.
Egyption Armed Forces.
AbstractIn this work, a proposed pipeline implementation of Data Encryption Standard DESalgorithm on field programmable gate arrays (FPGAs) is introduced with multiple designversions. All these versions are described in Electronic Code Book mode (ECB) using thehardware description language VHDL (Very high speed integrated circuit hardwaredescription language). These versions have differences in the architecture and the techniquesthat substitution boxes (S_BOXes) can be implemented. All these design were implementedon devices from XILINX and we achieved speeds of up to 4.23 Gbits/s.Besides, a comparative study is conducted between the proposed designs for DESalgorithm, another design for DES (Full Rolling) and the other previous implementationsbased on many aspects as architecture, cost and performance.
https://iceeng.journals.ekb.eg/article_33685_9c2f38a8e8b424226c98e183d2509593.pdf
Cryptography
data encryption standard
electronic code book
field programmable gate array
substitution boxes and very high speed integrated circuit hardware description language
symmetric block cipher
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33686
33686
Original Article
Improving the Performance of AES Encryption Algorithm
Alaa El Din Fahmy
1
Ahmed Sobhy
2
ABSTRACTA software simulation has been implemented for Advanced Encryption AlgorithmAES. Moreover, a chaotic generator has been added to AES to improve its securityperformance via generating a multiple keys instead of using one key. The modifiedAES has been tested for image encryption. The encrypted images have random shapeand it is absolutely un-identified and has no clue for the original image.
https://iceeng.journals.ekb.eg/article_33686_2e69a9e4429473feb0119ec4f1d1b568.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
13
10.21608/iceeng.2006.33687
33687
Original Article
AN ADAPTIVE ANTENNA UTILIZING MUSIC AND LINEARLY CONSTRAINED MINIMUM VARIANCE (LCMV) ALGORITHMS
MOHAMED A
1
Tan Z.
2
Egyptian Armed Forces.
Professor, School of Electronics, BUAA, Beijing, China.
ABSTRACTThis paper introduces a new structure based on the MUSIC algorithm and linearly constrainedminimum variance (LCMV) to highly suppress the jammers to the GPS receiver. This structure iscapable of adjusting the weights of the antenna array in real time to respond to the signals comingfrom the desired directions while highly suppress the jammers coming from the other directions.The simulations were performed for fixed and moving jammers. It indicates that this structure cangive deeper nulls to the jammers directions, up to 120 dB nulls depths for fixed jammers and morethan 99 dB depths for the moving one. These nulls are very deep related to that attained byMUSIC algorithm alone especially when the jammer signal power to the GPS signal is low.
https://iceeng.journals.ekb.eg/article_33687_a22217eeb0d706a12021e61e846306eb.pdf
Adaptive antenna
music
linearly constrained minimum variance (LCMV)
and GPS anti-jamming
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
8
10.21608/iceeng.2006.33688
33688
Original Article
APPLICATION ON SMOOTHING PARTICLE FILTER IN TRACKING A HIGHLY MANEUVERABLE TARGET IN A MULTIPLE-SENSORS NETWORK
Kamel H.
1
Badawy W.
2
Ph.D. Candidate, Elec. & Comp. Eng. Department, University of Calgary, AB, Canada.
Associate Professor, Elec. & Comp. Eng. Department, University of Calgary, AB, Canada.
ABSTRACTIn this paper we apply the smoothing particle filter to track a highly maneuverable target in amultiple-sensors network. We address the scenario of a single highly-maneuverable targetmoving through a field of stationary sensors with known locations. The target is trackedthrough the sensors filed using either all sensors or active sensors within a gate around thetarget. Results have been compared to tracking the same target using conventional particlefilter. Smoothing particle filter showed improvement in the performance.
https://iceeng.journals.ekb.eg/article_33688_95244d398aaa7a9f71cab80783c49743.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
14
10.21608/iceeng.2006.33689
33689
Original Article
SUBOPTIMAL DATA ASSOCIATION TECHNIQUE FOR MULTIPLE-TARGET TRACKING IN DENSE CLUTTER ENVIRONMENT
Kamel H.
1
Badawy W.
2
Ph.D. Candidate, Elec. & Comp. Eng. Department, University of Calgary, AB, Canada.
Associate Professor, Elec. & Comp. Eng. Department, University of Calgary, AB, Canada.
ABSTRACTIn multiple target tracking (MTT) systems that track targets with less-than-unity probabilityof detection in the presence of false alarms (FA), data association is very important. Dataassociation is responsible for deciding which of the received multiple measurements shouldupdate which track. Some data association techniques use a unique pairing to update a track;i.e. at most one observation is used to update a track. An alternative approach is to use all ofthe validated measurements with different weights (probabilities), known as probabilistic dataassociation (PDA). Due to the increase in the FA rate or low probability of target detection,most of the data association algorithms begin to fail. In this paper, we introduce a newsuboptimal PDA technique for MTT in dense clutter environment. The proposed technique isbased on merging the probabilistic nearest-neighbor filter (PNNF) with the PDA algorithm.The main idea is based on high-weighting the measurements that has minimum statisticaldistance from the predicted position of the target. The state updating equation in Kalman filteruses the combined innovation as in Joint Probabilistic Data Association method which isdefined as the weighted sum of the residuals associated with many observations. Due to itssimplicity in calculations and robustness, this technique can be used for real-time applicationseven though in dense clutter environments. We applied the proposed algorithm in trackingmultiple targets in presence of various clutter densities. Results showed better performancewhen compared to Nearest-Neighbor and All-Neighbors approaches in different clutterdensities and noise measurements.
https://iceeng.journals.ekb.eg/article_33689_4afc2e7731ce2c17ef101626c99d4d0a.pdf
Multiple target tracking
data association
probabilistic data association algorithm
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
5
10.21608/iceeng.2006.33690
33690
Original Article
RANGE INCREASE OF THE PASSIVE SURVEILLANCE SYSTEM
Matousek Z.
1
Ochodnicky J.
2
Lecturer, Department of Electronics, Armed Forces Academy, Liptovsky Mikulas, Slovakia.
Associate professor, Department of Electronics, Armed Forces Academy, Liptovsky Mikulas, Slovakia.
ABSTRACTPassive surveillance system (PSS) is one of the basic equipment in process of the electronicreconnaissance. During the past ten years multilateration PSS have been engaged in air trafficcontrol too. Well-know systems in this field are e.g. TAMARA and VERA-E which areproducts of the Czech Republic industry. Absence of the signal transmitting and receiving ofthe signal source only is one of their main advantages. Important parameters of PSS are rangeand quality of the reconnaissance information. The paper fixates to problems of recent PSSsystems range increase independently of signal sources parameters. The possibility of rangeincreasing looks through the receiver bandwidth adaptation. Receiver bandwidth adaptation ofthe PSS system provides increasing of the receiver sensitivity and result is the increase of therange. Theoretical analysis of the energetic conditions is present and some results of themodeling and simulations shown in paper.
https://iceeng.journals.ekb.eg/article_33690_3b9f4b26f0dad944a7eff7ae585fe3b5.pdf
Passive Surveillance System
ELINT
Receiver Bandwidth
range
Bandwidth Adaptation
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33691
33691
Original Article
Space-time processing for clutter rejection under jamming condition
A. Allam
1
K. El Barbary
2
Brig. Prof. Dr., Military Technical College.
Brig. Ass.Prof. Dr., Military Technical College.
Abstract:The two-dimensional filtering approach often referred to as space-time processing, (STP) hasbeen the subject of considerable research interest over the past two decades. The space-timeprocessing (STP) is a crucial technique for the new generation airborne radar with high air-togroundperformance. Slowly moving ground targets produce a reflected signals which couldnot be distinguish from the surrounding clutter reflections, The results in either spaceprocessing, (adaptive array) or temporal processing, (MTI) will be miss detection of thedesired target which has Doppler frequency and angle of arrival near to that ones of theclutter. Moreover ground based jammers could produce a wide frequency spread jammingsignal with relatively high power to confuse airborne radars. However STP could significantlyreduces the effects of both the clutter and jammers.
https://iceeng.journals.ekb.eg/article_33691_fdb6a187c5b37999893331d840fc7101.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
14
10.21608/iceeng.2006.33692
33692
Original Article
EFFICIENT CHANNEL ESTIMATION FOR WCDMA SYSTEMS
A. El-Bardaweny
1
K. El-Barbary
2
A. El-Mahdy
3
E. Saad
4
Egyptian Armed Forces.
Egyptian Armed Forces.
Egyptian Armed Forces.
Sudanese Armed Forces.
ABSTRACTThird generation (3G) cellular communication standards are based on Wideband CodeDivision Multiple Access (WCDMA). The wideband signals experience frequency-selectivefading due to multi-path propagation, hence increasing the Multiple Access Interference(MAI). To combat this effect, an efficient channel estimation algorithm, based on theMaximum Likelihood (ML) approach is derived. The algorithm handles the situation of multiuser,and multi-path by estimating a composite Channel Impulse Response (CIR). Thisestimation is performed in the reverse link, for each user, without needs of estimating eachindividual channel parameters. This has the achievement of reducing the computationalcomplexity. The efficiency of the proposed channel estimator is measured in terms of MeanSquared Error (MSE), handling capacity, loss due to estimation, as well as resistance to MAI.
https://iceeng.journals.ekb.eg/article_33692_b34377ea0a8ac431cd2104276ae2415b.pdf
WCDMA
Channel estimation
multi-path
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
8
10.21608/iceeng.2006.33693
33693
Original Article
AN ANALYTICAL PERFORMANCE BOUNDS OF NON-SYSTEMATIC PUNCTURED PARALLEL CONCATENATED CODES
Moataz Salah
1
Egyptian Armed Forces.
ABSTRACTA class of powerful error-correcting codes called parallel concatenated codes, or turbocodes, have performance superior than all other coding techniques. Turbo codes havebeen shown to achieve bit error rate performance close to Shannon's limit.In this paper, based on random puncturing of non-systematic bits of low rate turbocodes, we derive an analytical performance bound for high rate parallel concatenatedturbo codes. The new performance bound calculations and evaluations have beeninvestigated and compared with the simulation results.
https://iceeng.journals.ekb.eg/article_33693_9abd0c51a08b6f683192e67eb305c199.pdf
turbo codes
Space-Time Codes
diversity
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
11
10.21608/iceeng.2006.33694
33694
Original Article
AUTOMATIC CLASSIFICATION OF QUADRATURE AMPLITUDE MODULATED (QAM) SIGNALS IN PRESENCE OF CHANNEL IMPAIRMENTS
Tarek Helaly
1
Khairy Elbarbary
2
Associate Lecturer, Electronic Warfare Eng. Department, MTC, Cairo, Egypt.
Associate Professor, Electronic Warfare Eng. Department, MTC, Cairo, Egypt.
AbstractIn this paper, a procedure for automatic classification among three types of QAM signals inpresence of channel impairments is proposed. A combination of digital signal processing andpattern recognition methods is used for solving the classification problem. The proposedalgorithm has been tested by computer simulations and has proven to be reliable and robustagainst the expected channel impairments such as noise and fading. It is found that all digitalmodulation types of interest have been correctly classified with a success rate > 91 % atsignal-to-noise ratio (SNR) of 14 dB.
https://iceeng.journals.ekb.eg/article_33694_7c397865a69ee64ace06af950c3edefe.pdf
signal processing
Modulation Recognition
and Automatic Signal Classification
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
9
10.21608/iceeng.2006.33695
33695
Original Article
AUTOMATIC CLASSIFICATION OF MPSK SIGNALS USING STATISTICAL MOMENTS
Tarek Helaly
1
Associate Lecturer, Electronic Warfare Eng. Department, MTC, Cairo, Egypt.
AbstractIn this paper, an automatic classification algorithm for MPSK signals is proposed. In thisalgorithm, it is assumed that there is prior information about the received signal to be anMPSK type. The concept of the proposed classification algorithm is based on evaluating thestatistical moments of the instantaneous phase of the received signal and using it as a keyfeature to classify the MPSK signals. The proposed algorithm comprises three main steps: 1)estimation of the instantaneous phase of the received signal, 2) computation of statisticalmoments of the estimated phase, and 3) decision about the number of phase states of theintercepted signal. The performance of the proposed algorithm is measured in terms of thesuccess rate of classification using computer simulations. It is found that all digitalmodulation types of interest have been correctly classified with a success rate > 91 % atsignal-to-noise ratio, SNR, of 10 dB.
https://iceeng.journals.ekb.eg/article_33695_99c95d11183a46fce8c8655bba8c39c9.pdf
signal processing
Modulation Recognition
and Automatic Signal Classification
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
15
10.21608/iceeng.2006.33696
33696
Original Article
SEPARATION OF WIDEBAND SIGNALS USING ADAPTIVE ANTENNA ARRAY CONTROLLED BY A SOFTWARE DEFINED RADIO SYSTEM
Khairy El-Barbary
1
M. Abo El-Azm
2
Abstract :This paper is concerned with introducing a robust software defined radio system thatadaptively controls the beam pattern of a linear antenna array. This adaptation is performedfor cancellation of interference signals and simultaneous extraction of the signal of interest(SOI) to correctly recognize its modulation type in order to take the appropriate counteraction later. This counter action varies among signal analysis, monitoring, jamming…etc.This capability is achieved when the SOI and interference signals are either narrowband orwideband. Interference signals may be mutually correlated or mutually uncorrelated with theSOI. Computer simulations using an additive white Gaussian noise (AWGN) channel showthat the proposed software defined radio system succeeds to completely extract the SOI andcorrectly recognize its modulation type at 10 dB signal to noise ratio and -3 dB signal tointerference ratio.
https://iceeng.journals.ekb.eg/article_33696_38900127d0156e565b7fab8eb736532f.pdf
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
10
10.21608/iceeng.2006.33697
33697
Original Article
MULTIUSER CHANNEL ESTIMATION AND DEECTION FOR WCDMA SYSTEMS
A. El-Bardaweny
1
A. El-Mahdy
2
E. Saad
3
Egyptian Armed Forces.
Egyptian Armed Forces.
Sudanese Armed Forces.
ABSTRACTThis paper focuses on the design of a multi-user receiver structure for the reverse link of aWideband Code-Division Multiple-Access (WCDMA) communication system. Thedetection is based on a ML-based channel estimation algorithm. Once a composite ChannelImpulse Response (CIR) of each user is estimated, it is directly used in the detectionprocess instead of first extracting the individual channel parameters, such as path delaysand attenuation factors. The paper presents a framework that facilitates a computationallyefficient solution to the combined problem of channel estimation and detection in a multiusermulti-path environment. The performance of the different detectors is evaluated interms of bit error probability using the estimated composite CIR.
https://iceeng.journals.ekb.eg/article_33697_04ec62e9ce44b3a96ce040c66077f250.pdf
Multi-user detection
Estimation
WCDMA
eng
Military Technical College
The International Conference on Electrical Engineering
2636-4433
2636-4441
2006-05-01
5
5th International Conference on Electrical Engineering ICEENG 2006
1
15
10.21608/iceeng.2006.33698
33698
Original Article
DIRECTION OF ARRIVAL ESTIMATION VIA EXPLOITATION OF CYCLOSTATIONARITY IN A SPACE / TIME ARRAY PROCESSING ALGORITHM
ELSAYED AZZOUZ
1
ASHRAF ABD EL-AZIZ
2
M. Abo El-Azm
3
Abstract :This paper is concerned with introducing a direction of arrival estimation (DOA) estimationalgorithm that is independent of the bandwidth of the intercepted signals. The proposedalgorithm offers a modification to most subspace based DOA estimation algorithms thatdepend basically on narrowband signals assumption. The basic idea of this modification is thereplacement of conventional correlation matrix by a cyclic one. This modification enables theproposed algorithm to deal with both narrowband and wideband signals. In addition, thisalgorithm requires only that the interference signals are cyclically uncorrelated with SOI. Thiscondition is easier to be achieved than uncorrelation condition that is required byconventional algorithms. Computer simulations using an additive white Gaussian noise(AWGN) channel show that the proposed DOA estimation algorithm succeeds to estimateDOAs of the SOI and interference signals at 10 dB signal to noise ratio and -3 dB signal tointerference ratio.
https://iceeng.journals.ekb.eg/article_33698_7ee6ada734cea391d4112a0b8f35aa1f.pdf