Passive SAR imaging using a satellite pulsed radar as an illuminator of opportunity

This paper presents the analysis and simulation results of a ground stationary passive synthetic aperture radar (SAR) receiver using a spaceborne SAR as an illuminator. In the paper, the bistatic geometry of passive SAR is presented and the expected resolutions are discussed and compared to the monostatic case. Finally, the results of the signal processing for both active and passive SAR imaging are presented. The main goal of the analysis performed was to develop and test new passive SAR algorithms dedicated for the passive SAR receiver developed at the Warsaw University of Technology. The results obtained verify the feasibility of the proposed passive SAR imaging algorithm.