一种双基地MIMO雷达快速多目标定位方法

摘要

该文研究了双基地MIMO雷达测向交叉多目标定位方法,提出了一种基于传播算子的双基地MIMO雷达快速多目标定位算法.该方法避免了一般子空间方法中占主要运算量的协方差矩阵估计和奇异值分解,不需要二维谱峰搜索,在保证二维方位角估计性能的基础上,降低了运算复杂度.利用矩阵的初等变换以及矩阵、矩阵特征值和特征值对应的特征向量三者之间的关系,该算法所估计二维方位角参数能自动配对,不需要额外的配对运算.最后仿真结果验证了该算法的有效性.%The direction finding cross localization using bistatic MIMO radar system is studied in this paper, and a fast multi-target localization algorithm based on propagator method is proposed. The new method avoids the estimation and SVD (Singular Value Decomposition) of the covariance matrix of the received signals which are the main computational burden in traditional subspace method, and does not need two-dimensional (2-D) spectrum peak searching. Thus, the computational complexity of the proposed algorithm is reduced with the maintenance of good performance for two-dimensional angle estimation. According to the elementary matrix transformation and the tripartite relationship among matrix, the eigenvalue of the matrix and the eigenvector corresponding to the eigenvalue, the estimated parameters of the proposed algorithm are automatically paired with the additional paring computation eliminated. The simulation results demonstrate its effectiveness and robustness.