CW Radio Seeker Performance Analysis in Presence of Uncertainties for Semi-Active Homing Guidance System

Document Type : Original Article

Authors

Egyptian Armed Forces.

Abstract

Abstract:
Radio seeker in a semi-active homing guided missile system is a crucial subsystem for
performance analysis and development. The signal at the front and rear receivers are
mixed to shift the carrier frequency to an intermediate frequency (IF) where the target’s
Doppler shift can be detected. Such a system has various sources of uncertainties that
may significantly affect the radio seeker ability to detect a target correctly including
noise, clutter, jamming, and target maneuvers, etc. Uncertainties may lead to degrade
the performance of a CW Doppler Monopulse seeker. This paper investigates a semiactive
homing missile guidance and control system in presence of jamming, noise and
uncertain target maneuvers. In particular, the paper introduces an Electronic Counter
Counter-measurements (ECCM) technique that degrades the effectiveness of blinking
jamming (BJ) and multiple blinking jamming (MBJ) techniques. These two selfscreening
ECM techniques are sources of incoherent deception, where they attempt to
attack the tracking dynamics of the angle-tracking radar and, hence, may be effective
against some types of Monopulse radar as well as other tracking radars. A mathematical
model of a typical Monopulse tracking seeker is presented. A three-degrees-of-freedom
missile-target engagement simulation model is carried out under MATLAB/SIMULINK
environment for testing and evaluation. Simulation results are given. The paper is
terminated with conclusions.

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