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。

In order to solve the problem of altitude measurement under low angle environment with ground fluctuating, a method of altitude measurement based on ground fluctuant modeling is proposed. In this method, a vertical antenna array is utilized to receive the return signals from targets. Considering the ground fluctuation, we modeled the reflecting path as a statistical processing to extract the primary components. Finally, the real target height is estimated by subspace intersection and one-dimensional height searching. In general, the performance of the proposed method is studied and the efficiency of the proposed method is verified by simulations and experiments under different conditions.

TN95；TP301.6