基于双平行线阵二维相干信号DOA估计新方法  

The New Method Based on the Pair of Two-dimensional Array of Parallel Lines Coherent Signal DOA Estimated

作　　者：刘志君[1] 康晓涛[1] 杨宇飞[1] 许驰[1] 石要武[1] 

机构地区：[1]吉林大学通信工程学院,长春130025

出　　处：《长春理工大学学报（自然科学版）》2008年第4期94-97,共4页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金(69872012);吉林省基础研究计划基金资助(20030519)

摘　　要：提出了一种在高斯白噪声下基于双平行线阵的二维相干信号的DOA估计的新方法。本算法首先通过对接收数据进行前向空间平滑来达到去相干目的,然后计算出3个m×m相关矩阵,用此构造一个3m×m大矩阵,并对其进行特征值分解,最后利用ESPRIT方法对方向角和仰角进行估计。本算法不需谱峰搜索,无相位模糊问题,且参数自动匹配,计算量较小。仿真结果证明了该方法的有效性。Based on double parallel lines of the two-dimensional array, a new method about coherent signals in the DOA estimated was presented. Firstly, prior to receiving data smoothing space, calculation of the three m×m correlation matrix, construction of a large 3m×m matrix, large matrix eigenvalue decomposition, the estimation of the angles of direction and elevation were achieved by the ESPR IT method. The algorithm does not require peak search, has no phase fuzzy, and can automatically match parameters, and has the smaller amount of computation.

关 键 词：波达方向估计 相干信号 空间平滑 ESPRIT方法 

分 类 号：TN911.7[电子电信—通信与信息系统]