SRC Imaging Method of De-chirped Broadband LFM Signal and Its Real Time Implementation
Yao Ping①②; Zhang Tao②; Li Ming-feng②; Wang Zhen-song②
①Institute of Electronics; Chinese Academy of Sciences Beijing 100080 China;②Institute of Computing Technology,Chinese Academy of Sciences, Beijing 100080, China
Abstract：Based on the analysis of the time and frequency domain character of the de-chirped broadband LFM signal, this paper presents the SRC imaging method of S AR with de-chirped LFM signal. In comparison with the RD and SRC method of normal LFM signal with the same swath and resolution, this method is proved suitable for real time processing with a decrease of data to be processed and a little amount of calculation increased. Data collected in de-chirp LFM SAR system is formed into images with this method and demonstrates it is better than RD to form fine-resolution images when there exits a squint angle in SAR system, which is usually the case in reality.
姚萍; 张涛; 李明峰; 王贞松. 基于去调频宽带LFM信号的二次距离压缩算法及其实时实现[J]. 电子与信息学报, 2004, 26(2): 183-187 .
Yao Ping①②; Zhang Tao②; Li Ming-feng②; Wang Zhen-song②. SRC Imaging Method of De-chirped Broadband LFM Signal and Its Real Time Implementation. , 2004, 26(2): 183-187 .
2004, Vol. 26 
