A Sub-aperture Detection Algorithm for Single Channel SAR-GMTI  

作　　者：GAO Fei GAO Fei SUN Jinping SUN Jinping MAO Shiyi[1] MAO Shiyi[1] 

机构地区：[1]School of Electronic and Information Engineering, Beihang University, Beijing 100083, China [1]School of Electronic and Information Engineering, Beihang University, Beijing 100083, China

出　　处：《Chinese Journal of Electronics》2009年第4期749-753,共5页电子学报（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China （No.60702011） and Pre-research Foundation （No.9140A07051009HK0126）.

摘　　要：Detection of moving targets in single channel SAR images is discussed. By introducing the two and three channel SAR-GMTI techniques in com- mon use, a new detection algorithm based on 3 sub- aperture Cancellation-after-interferometry （CAI） is pro- posed, in which multi-aperture images are pre-formed by overlapped frequency division of clutter bandwidth and then compensated of magnitude and phase errors between them. Simulation results show the proposed algorithm having better robustness against clutter uncertainty espe- cially in strong clutter environments. Performance analy- sis of multi-channel detection method also show that the proposed single-channel algorithm has no direct capability of parameter estimation brought by substantial problem of correlation lost caused by shortage of multi-channel de- ployment.

关 键 词：SAR GMTI Multi-channel configura- tion Single-channel configuration Sub-aperture image. 

分 类 号：TN958[电子电信—信号与信息处理] F062.4[电子电信—信息与通信工程]