HRWS Imaging for Space-borne Multi-static SAR System with Along-track Multi-channel

Incorporated with digital beamforming processing, along-track multi-channel spaceborne SAR systems are promising in High-Resolution and Wide-Swath (HRWS) imaging by overcoming the minimum antenna area constraint. In this paper, a common phase compensating equation for multi-static space-borne SAR systems is given. Then, it is proved that the optimum capon method can keep the phase quality, and the orbit parameters of each sample are obtained for the following SAR interferometry processing and target locating. Finally, the proposed method is validated using the simulated data based on the ellipse earth model.