Abstract:The sub-aperture algorithm has great important role in SAR real-time processing. The algorithm combined the sub-aperture and Nonlinear Chirp Scaling (NCS) algorithm has good performance in real-time processing of UWB SAR. However the ghost or false targets exist in the algorithm based on sub-aperture. In this paper, the reason for ghost or false target existing is theoretically analyzed, furthermore, the method of eliminating the ghost is proposed using zero-padding with sub-aperture data. Finally, the validity is verified with simulation and real UWB SAR data.
李建阳; 常文革; 李悦丽. 子孔径NCS算法中虚假目标产生的机理与消除方法研究[J]. 电子与信息学报, 2010, 32(5): 1239-1243 .
Li Jian-yang; Chang Wen-ge; Li Yue-li. The Theory Analysis of False Target in Sub-aperture Algorithm. , 2010, 32(5): 1239-1243 .