Amplitude and Phase Errors Correction Method for FMCW Array SAR System Using Single Prominent Point Echo
Yang Xiao-lin①②③ Tan Wei-xian①② Lin Yun①② Wang Yan-ping①② Hong Wen①②
①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ②(Science and Technology on Microwave Imaging Laboratory, Beijing 100190, China) ③(University of Chinese Academy of Science, Beijing 100049, China)
Abstract：Frequency Modulated Continuous Wave (FMCW) array antenna SAR system combines the FMCW and array antenna imaging technology, which is of abroad interest in both civil and military applications. While in practical FMCW array SAR, the presents of unavoidable sweep rate non-linearity error in the frequency modulation and the multi-channel amplitude/phase errors severely degrade the reconstruction image quality. The signal model with sweep rate non-linearity error and multi-channel amplitude/phase errors is proposed in this paper. An error calibration scheme and data processing flow chart based on single prominent point echo are presented. Extensive simulations and real data processing are performed to validate the effectiveness of the proposed calibration scheme.
杨晓琳, 谭维贤, 林赟, 王彦平, 洪文. 基于单特显点调频连续波阵列SAR系统幅相误差校正方法研究[J]. 电子与信息学报, 2014, 36(11): 2672-2677.
Yang Xiao-Lin, Tan Wei-Xian, Lin Bin, Wang Yan-Ping, Hong Wen. Amplitude and Phase Errors Correction Method for FMCW Array SAR System Using Single Prominent Point Echo. , 2014, 36(11): 2672-2677.
2014, Vol. 36 
