Through the Wall Radar Simulations Using Polarimetric Antenna Patterns

Report No. ARL-TR-5951
Authors: Traian Dogaru and Calvin Le
Date/Pages: March 2012; 56 pages
Abstract: In this report, we analyze the impact of coupling the polarimetric characteristics of antennas and targets on a radar system response and performance. We start by formulating the basic equations that govern this interaction and extend them to images created by an ultra-wideband (UWB), broad-beam-antenna, strip-map synthetic aperture radar (SAR) system. In the numerical example section, we apply this method to the problem of through-the-wall detection of a small weapon based on polarimetric differences between SAR images. The scenarios considered involve buildings of various complexities, as well as two families of antenna patterns. The results demonstrate a reduction in the weapon detection scheme performance when the radar antenna cross-polarization suppression drops under a certain limit. The numerical examples are based on simulated data obtained by the AFDTD software (for the radar target signature) and the FEKO software (for the antenna patterns).
Distribution: Approved for public release
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Last Update / Reviewed: March 1, 2012