A Method for Spaceborne SAR Geolocation Based on Continuously Moving Geometry
Qiu Xiao-lan①②③ Han Chuan-zhao① Liu Jia-yin②③
①(Beijing Institute of Remote Sensing Information, Beijing 100192, China) ②(Key Laboratory of Technology on Geo-spatial Information Processing and Application System, Chinese Academy of Sciences, Beijing 100190, China) ③(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)
Geolocation is a very important step in Synthetic Aperture Radar (SAR) data processing. The precision of geolocation severely affects the applications of SAR images. This paper analyzes the influences on SAR geolocation caused by the traditional “stop-go” approximation, and establishes the range-Doppler equations for the real continuously moving configuration, and also provides a simplified way to solve the equations. Simulations and geolocation experiments on real SAR data of Beijing area validate the proposed method and show the correctness of the analysis.
仇晓兰, 韩传钊, 刘佳音. 一种基于持续运动模型的星载SAR 几何校正方法[J]. 雷达学报, 2013, 2(1): 54-59.
Chou Xiao-lan, Han Chuan-zhao, Liu Jia-yin. A Method for Spaceborne SAR Geolocation Based on Continuously Moving Geometry. JOURNAL OF RADARS, 2013, 2(1): 54-59.
