The correction of chirp radar signals based on SAR raw data
Huang Lisheng①; Wang Zhensong①; Xu Yongjian②
①Institute of Computer Technology Chinese Academy of Sciences Beijing 100080 China;②Institute of Electronics Chinese Academy of Sciences Beijing 100080 China
Abstract:This paper introduces an algorithm used in estimation of the phase error of chirp signal. Firstly, the algorithm applies Range Cell Migration Correction (MCRC) to SAR signals with chirp scaling method, and processes on azimuth compression only. Then the phase error of the radar chirp signal is estimated by applying the auto-focus method, for example, Map Drift (MD) or Phase Gradient Algorithm (PGA) to the azimuth processing of signals. Further correction on estimated phase error is applied to discussion of the factors that influent the phase error estimation. The algorithm is proved by computer simulation.
黄立胜; 王贞松; 徐永建. 用SAR原始数据对雷达脉冲信号失真的校正[J]. 电子与信息学报, 2002, 24(11): 1641-1647 .
Huang Lisheng①; Wang Zhensong①; Xu Yongjian②. The correction of chirp radar signals based on SAR raw data. , 2002, 24(11): 1641-1647 .