Target Signatures and Pose Estimation

Document Type : Original Article

Authors

1 American University in Bosnia and Herzegovina International University of Sarajevo, FENS Sarajevo, Bosnia & Hercegovina.

2 Faculty of Engineering & Natural Sciences, EE Program International University of Sarajevo Sarajevo, Bosnia & Hercegovina.

Abstract

The paper discusses an important class of defense and commercial applications in the context of Ground Target (Object) Identification, Classification, and Tracking. The data base of target digital signatures is assembled and formed for a full spatial circle (360 degrees) analysis from such sources as High Resolution Radar and Synthetic Aperture Radar. These digital signatures are analized from which various spatial as well as frequency (wavelet) characteristics of the targets are formed and interpreted, in order to make good estimate of target pose angle. This angle is key for tracking maneouvering targets. Various statistical measures are obtained from digital signatures to assist in pose angle estimation. We also use certain geometrical considerations to determine an initial pose estimate which is the refined using a variety of correlation coefficients. Expected precision of pose estimate is within few degrees, i.e. within few neighboring target signatures. The paper presents several real life ground target signatures as well as several simulated signatures to illustrate our approach.

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