一种基于DPCA的星载SAR运动目标检测方法

文中研究星载条件下用DPCA检测地面慢速运动目标的SAR-GMTI技术,提出一种对杂渡抑制以后的原 始数据应用Radon变换来检测运动目标的新方法。与基于图像域的DPCA运动目标检测方法相比,该方法不需要方位 压缩,因而减小了计算负荷,但没有损失目标检测性能。此外,该方法更加清楚地显示出杂波对目标参数估计的影响,可 为进一步研究提供思路。仿真结果证明这种方法的正确性和有效性。

A Moving Targets Detection Method for Spaceborne SAR Based on DPCA

This paper studies the spaceborne SAR-GMTI based on DPCA, and proposes a new moving target detection method which applies Radon Transform in the raw data domain. This method requires no azimuth compression thus greatly reduces computational load but without performance losing compared with approach based on DPCA in image domain. Furthermore. this method makes the nature of clutter contamination on target parameter estimation clear and provides clue for future improvement. Simulation results indicate the feasibility and effectiveness of this method.