基于Unitary-ESPRIT算法的二维DOA估计  

2-D DOA Estimation Based on Unitary-ESPRIT Algorithm

作　　者：张远安[1] 董国[1] 张艳艳[1] 

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《火力与指挥控制》2013年第5期109-111,116,共4页Fire Control & Command Control

摘　　要：提出了一种采用酉ESPRIT(Unitary-Estimation ofSignal Parameters via Rotational Invariant Technique,Unitary-ESPRIT)算法对目标的二维波达方向(Direction-of-Arrival,DOA)进行估计,接收信号模型为中心对称的平面阵。与二维MUSIC(Multiple Signal Classification)算法、二维求根MUSIC算法、二维ESPRIT算法不同的是,该算法将复矩阵运算转化为实矩阵计算,简化了运算复杂程度,并且目标的DOA估计精度也相应的得到提高,是一种比较高效的DOA估计算法。An Unitary ESPRIT algorithm for the estimation of Direction-of-arrival angles is proposed,and the receiving array is a planar array with symmetrically distributed sensors.Different from the 2-D MUSIC algorithm,2-D Root MUSIC algorithm and 2-D ESPRIT algorithm,the 2-D Unitary ESPRIT algorithm converts the complex matrix into a real one,which makes the calculation easily and reduces the time for the estimation of DOAs.At the same time,it enhances the accuracy of the estimation of DOAs.In briefly,the 2-D Unitary ESPRIT algorithm is an effective method for the estimation of DOAs.

关 键 词：二维DOA估计 中心对称平面阵 二维Unitary-ESPRIT算法 DOA估计精度 

分 类 号：C934[经济管理—管理学]