基于约束最小冗余阵列的MIMO雷达二维波达方向估计  

2D-DOA Estimation for MIMO Radar Based on Restricted Minimum-Redundancy Linear Array

作　　者：郑志东[1] 张剑云[1] 查淞[1] 

机构地区：[1]电子工程学院,合肥230037

出　　处：《电子信息对抗技术》2009年第6期1-5,13,共6页Electronic Information Warfare Technology

摘　　要：基于约束最小冗余线阵(RMRLA),提出利用增广矩阵束(MEMP)算法来估计MIMO雷达的二维DOA。采用约束最小冗余线阵配置L形阵列,计算两线阵的互四阶累积量并构造增广矩阵,利用RMRLA-MEMP方法估计出二维波达方向。此方法同时利用约束最小冗余和四阶累积量阵列扩展的性质,提高了角度的估计精度,且估计过程不需要谱峰搜索,能够很好地解决MIMO雷达二维DOA估计中的相位模糊问题,仿真验证了算法的有效性。Based on RMRLA, a novel algorithm of two-dimensional of arrival estimation for MIMO radars by Matrix Enhancement and Matrix Pencil（MEMP） is proposed. Firstly, an L-shape array is constructed by two RMRLA and using fourth-order cumulant to compute the covariance matrix of out- put of the two RMRLA and the cross cumulant matrix is constructed, and then the 2 - D DOA is computed by the RMRLA-MEMP method. This algorithm improves the valid aperture of the arrays, which can offer the higher bearing resolution. And it could solve the phase ambiguity well without the spectral peak searching. The effectiveness of the method is demonstrated through some simulation exampies.

关 键 词：约束最小冗余线阵 MIMO雷达 二维DOA估计 增广矩阵束 四阶累计量 

分 类 号：TN953.3[电子电信—信号与信息处理]