A New Imaging Method for Quasi Geostationary Sar Constellation Using Spectrum Gap Filling

Quasi geostationary orbit (GSO) synthetic aperture radar (SAR) has the superiority of continuous wide view Earth observation. High resolution is achieved at the cost of long integration time. In this paper we propose a new imaging method for quasi GSO SAR constellation. By implementing spectrum gap filling, the azimuth resolution corresponding to the gapped synthetic aperture covered by the constellation is reached. Simulation results validate the proposed method.