A New Nonlinear Chirp Scaling Algorithm for Translational Variant Bistatic Forward-Looking SAR with Dive Trajectory

With more flexibility and higher generality, translational variant BFSAR has extensive potential applications in self-handing and navigation. However, the current BFSAR imaging algorithms mostly focus on bistatic configuration without velocity of altitude which would product azimuth position error. In this paper, we propose a new nonlinear chirp scaling (NCS) imaging algorithm that using frequency focusing position to remove spatially variability of Doppler parameters. Finally, simulation results further validate the effectiveness of the method.