根据粗糙表面散射理论,我们研究了地表低角跟踪问题。建立了一个详细的散射模型,这个模型与获得的测试数据相吻合并且是按雷达坐标估计的功率分布进行的。利用这个模型对提出的消除多路径效应的各种技术措施进行了评价。有些方法在保持一定的跟踪精度条件下仰角在水平面1/4波束宽度以上是有效的,但是在低于1/4波束宽度的高度测量尚未得到实际解决。 According to the theory of rough surface scattering, we studied the problem of low angle tracking on the earth’s surface. A detailed scattering model was built, which is consistent with the test data obtained and is based on the power distribution estimated from the radar coordinates. This model is used to evaluate the various technical measures proposed to eliminate multipath effects. Some approaches are effective at horizontal ¼ beam width with certain tracking accuracy, but height measurements below ¼ beam width have not been effectively resolved.