轨道地表穿透合成孔径雷达（GPSAR）是为了评估UWBSAR在地雷目标探测中的可行性和效能，而用高于地面数米支架作为轨道构建的一个地雷目标探测系统。文中首先介绍了轨道GPSAR的系统框架，接着介绍了该系统在射频／耦合抑制、近场SAR成像，以及埋设地雷目标检测方面所作的工作，最后，用一系列实测试验数据及其处理结果验证了轨道GPSAR检测地雷目标的性能。

A standoff landmine detection system,Rail-GPSAR,was built for the purposes to evaluate feasibility and effectiveness of landmine detection using UWB SAR.The system architecture of Rail-GPSAR is introduced firstly,and then some new approaches to Radio Frequency Interference(RFI)/coupling suppression;near-field SAR imaging and detection of the buried landmines are proposed.Finally the detection performance of Rail-GPSAR is validated by a series of field experiments.

TN958