摘要
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
出处
《现代雷达》
CSCD
北大核心
2016年第7期7-10,43,共5页
Modern Radar
关键词
低仰角测高
相交子空间
地形起伏
多径
altitude measurement in low elevation angle environment
subspace intersection
ground fluctuation
multi-path environment
