A Unified Imaging Algorithm for Multimode Spaceborne SAR

The new generation spaceborne SAR systems will be with high resolution and several work modes. In this paper, a unified imaging algorithm for multimode spaceborne SAR with the same chirp scaling processing core module was presented. Different pre- and post-processing steps were designed for stripmap, scan and spotlight work mode of spaceborne SAR. The same core module will make transplant and computation optimize of imaging processing platform more convenient. This unified imaging algorithm was validated through stripmap and scan mode raw data processing and point target simulation of spotlight mode.