LAUSR

Bistatic forward-looking synthetic aperture radar (BFSAR) can create a highly focused image of a target in the flight direction of the receiver. However, most research on BFSAR imaging is aimed at stationary targets, with relatively few studies on ship targets. We propose DPEP, an estimate of Doppler parameters, based on particle swarm optimization (PSO) for ship target imaging in the BFSAR system. The relationship between the Doppler parameters and those of the motion of a ship target is derived from the geometry of the BFSAR system. PSO is adopted to accurately estimate the Doppler parameters, so as to construct the functions for compression. The proposed algorithm is validated and compared to traditional algorithms through simulations.