针对起伏地形条件下米波雷达低仰角测高问题,提出了一种基于地形扰动建模的低角测高方法。该方法利用垂直放置的天线阵列接收回波信号,基于地形扰动建模,提取起伏条件下的主特征分量,并对目标高度进行一维搜索,通过判定两个信号子空间是否相交来估计得到目标高度。通过计算机仿真和试验分析了方法的测高性能,并验证了该方法的有效性。 Aiming at the problem of low altitude elevation of rice-wave radar under undulating topography, a low-angle altimetry method based on terrain disturbance modeling is proposed. In this method, the vertical antenna array is used to receive the echo signals. Based on the terrain perturbation modeling, the main feature components under the undulations are extracted and the target height is searched one-dimensionally. The target is estimated by determining whether the two signal subspaces intersect height. The performance of the method is analyzed by computer simulation and experiment, and the effectiveness of the method is verified.