Robustness of LRMR based Passive Radar Imaging to Phase Errors

Konferenz: EUSAR 2016 - 11th European Conference on Synthetic Aperture Radar
06.06.2016 - 09.06.2016 in Hamburg, Germany

Tagungsband: EUSAR 2016

Seiten: 4Sprache: EnglischTyp: PDF

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Mason, Eric; Yazici, Birsen (Department of Electrical, Computer and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA)

We present a numerical evaluation of our newly developed passive SAR imaging method for phase error resulting from incorrect antenna location. Our method is based on Low Rank Matrix Recovery (LRMR). The LRMR-based method is an alternative to the widely used time difference-of-arrival (TDOA) based back-projection and overcomes the point target assumption on which TDOA backprojection relies. We form a forward model by correlating measurements between two receivers and observe that this results in a rank-one positive semi-definite unknown operator. Imaging is accomplished by solving a constrained trace minimization problem. Since the iterative procedure is non-linear and difficult to analyze, we consider only a numerical evaluation. We demonstrate that our method out performs TDOA backprojection when forming images of scenes with multiple point targets in the presence of antenna motion error.