An Algorithm for Repeated Trajectory Bistatic Spotlight SAR Widefield Imaging
同航线双基聚束式SAR宽场景成像算法

Based on the current research on bistatic SAR image, a new algorithm to process data of repeated trajectory bistatic spotlight SAR system is proposed. The algorithm first suppress azimuth aliasing with an azimuth preprocess step, and focus image with traditional wavenumber domain algorithm. It is with high focusing accuracy without distortion involved, by which well focused image over large scene can be obtained. The principal of the azimuth preprocess is also suited to deal with other spotlight SAR mode. And a numeric simulation confirms the validity of the algorithm.