Imaging Algorithms and Analysis of Airborne SAR in Large Squint Mode

This paper studies image algorithms and analyses imaging quality of air-borne Synthetic Aperture Radar (SAR) in large squint mode. Based on the spatial geometry model of squint mode air-borne SAR and echo response, a method to improve RD algorithm is introduced in detail, and the flowcharts of this algorithm and Extended Chirp Scaling (ECS) algorithm are given. The simulation results demonstrate that these two algorithms meet the requirements of air-borne SAR imaging in large squint mode.