双基地MIMO雷达的收发角度快速估计方法  

A Fast Algorithm for DOD-DOA Estimation of Bistatic MIMO Radar

作　　者：闫金山[1] 彭秀艳 

机构地区：[1]哈尔滨工程大学,哈尔滨150001

出　　处：《东北林业大学学报》2012年第8期100-104,共5页Journal of Northeast Forestry University

基　　金：国家自然科学基金(60704018)资助

摘　　要：提出一种双基地MIMO雷达的收发角度快速估计方法。该方法利用多级维纳滤波的前向递推多级分解特性获得接收信号的信号子空间,然后构造出收发角度的二维空间谱函数,同时将二维空间谱函数通过线性约束二次优化转换为两个一维的空间谱函数,从而获得目标的收发角度,且收发角度自动配对,不需要额外的配对运算。该方法避免了协方差矩阵的估计及其特征值分解,且收发角度估计只需要一维空间谱搜索,大大降低计算复杂度。仿真结果证明了该算法的有效性。A fast algorithm for direction of departure and direction of arrival （DOD-DOA） estimation of Bistatic MIMO radar is presented. In this proposed method, the signal subspace can be obtained by forward recursion of the multi-stage wiener filter, and the two-dimensional spatial spectrum function of DOD-DOA can be constituted. Then the two-dimensional spatial spectrum function can be turned into one-dimensional spatial spectrum function by finding the solution of a linear constrained quadratic problem. The DOD-DOA can be achieved and paired automatically without additional pairing computation. The proposed method avoids the estimation of the covariance matrix and its eigen-decomposition, and only needs one- dimensional spectrum search. Thus, the proposed method has lower computational complexity. Simulation results demon- strate the effectiveness of the proposed algorithm.

关 键 词：双基地MIMO雷达 收发角度 多级维纳滤波 空间谱 

分 类 号：TN95[电子电信—信号与信息处理]