Research on Sliding spotlight imaging algorithm

Based on the mathematical model of sliding spotlight SAR (Synthetic Aperture Radar), this paper proposes a sliding spotlight imaging processing algorithm based on ECS algorithm. The algorithm first uses Deramp processing to eliminate the azimuthal spectrum aliasing in gliding spotlight mode, and then uses extended CS processing and phase compensation to achieve accurate range compression processing, range migration correction, azimuthal phase compensation and azimuthal compression processing, so as to achieve unified imaging in the whole field. This paper presents the detailed derivation and implementation process of the whole algorithm based on the linear geometric model, and the computer simulation results verify the effectiveness of the algorithm.