A Moving Target Detection Method Based on Back-projection DPCA for Bistatic Forward-Looking SAR

With appropriate geometry configurations, bistatic synthetic aperture radar (SAR) can break through the limitations of monostatic SAR on forward-looking imaging. Thanks to such a capability, bistatic forward-looking SAR (BFSAR) has extensive potential applications. Thus, moving target detection (MTD) for BFSAR has become an important research field. In this paper, a MTD method based on BP-DPCA in BFSAR is presented, and do the detailed analysis. First, back-projection can completely compensate the phase of static clutter, and eliminate the effects of channel spacing for static clutter, but for moving target, the phases can not be compensated fully. Thus, the BP-DPCA method can suppress the static clutter, achieve the goal of moving target detection. Simulation results verify the validity and efficiency of the presented method.