该文研究三通道合成孔径雷达(SAR)在通道不平衡条件下的慢动目标检测、定位问题。实际系统中，由于雷达系统存在通道幅相不一致等误差，干涉SAR/GMTI技术的杂波抑制性能急剧下降，无法检测慢动目标并进行定位。本文提出了一种分块SAR图像通道误差校正算法，进而采用空域自适应处理对慢动目标进行检测及定位。仿真实验表明该方案对系统误差的敏感度显著下降，具有很好的鲁棒性，非常适合实际工程实施。

In this paper, a robust slowly-moving target detection and location algorithm is investigated. In practice, due to channel imbalance such as gain and phase error, the clutter suppression performance of the interferometric SAR/ GMTI is significantly degraded, and makes it difficult to detect and locate the moving target. A channel error calibration algorithm based on sub-patch SAR image is proposed, and the spatial adaptive processing is used for the moving target detection and location.The simulation results are presented to demonstrate that, the proposed algorithm is robust to system errors, and is suitable for engineer implementation.