基于四阶累积量的二维波达方向估计改进算法  

Improved Algorithm for 2-D DOA Estimation Based on Fourth-Order Cumulants

作　　者：王鼎[1] 龚辉[2] 吴瑛[1] 

机构地区：[1]解放军信息工程大学信息工程学院,郑州450002 [2]国营713厂设计所,九江332005

出　　处：《数据采集与处理》2007年第3期342-346,共5页Journal of Data Acquisition and Processing

摘　　要：利用四阶累积量的阵列扩展特性,将一排直线阵列和一个独立阵元扩展成一个特殊的虚拟双排直线阵列,它由三个子直线阵列构成,并且可计算出每个子直线阵列等效的协方差矩阵,然后结合传播算子方法,提出一种改进的二维波达方向估计算法。计算机仿真验证了该算法具有抗噪能力强、数值稳定性好等优点。One kind of special two rows of linear arrays can be extended by one row of linear arrays and an independent array by using the property of aperture extension of fourth-order cumulants. The virtual array includes three subarrays. The equivalent covariance matrix of each subarray can be computed and an improved 2-D DOA estimation algorithm is developed based on the propagator method. Simulations show that the algorithm is insensitive to additive noise and has high robustness.

关 键 词：波达方向估计 四阶累积量 阵列扩展 算法 

分 类 号：TN911.7[电子电信—通信与信息系统]