Suppression of Azimuth Ambiguities with Constellation of Micro-satellites

To achieve wide-swath and full azimuth resolution in space-borne synthetic aperture radar (SAR), a space-borne radar usually utilizes low pulse repetition frequency (PRF) with a small aperture in azimuth. Consequently, the azimuth ambiguities are inevitable. As one solution to this problem, space domain filter can be utilized to remove the azimuth ambiguities based on the configuration of micro-satellites distributing along track. In this paper, an innovative method is proposed to simplify the calculation of the filter weight vectors. Simulation shows the validity of the method