Passive polarimetrie multistatic radar for ground moving target

Abstract

We consider a scene illuminated by a single stationary transmitter with unknown polarization and a set of spatially distributed receivers exhibiting polarization diversity. We present a model and detection framework to detect moving targets using a multistatic passive receivers with polarimetric diversity. We model the targets as a set of dipole antennas. The model captures the anisotropic nature of targets exhibited in multistatic configurations. We address the moving target detection problem in a generalized likelihood ratio test (GLRT) framework. In addition, we introduce a method for estimating the dipole moments of the target derived from the GLRT formulation. We show, through a set of simulations, the efficacy of polarization diversity in both target detection and dipole estimation.