基于伪数据矩阵的二维自动配对角度估计方法  

Automatic-pairing method for 2-D angle estimation based on pseudodata-matrix

作　　者：李南君[1] 顾建峰[1] 魏平[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都610054

出　　处：《电波科学学报》2009年第3期482-487,共6页Chinese Journal of Radio Science

基　　金：教育部新世纪优秀人才计划资助(No.NCET-05-0803);中国博士后科学基金(20080441199)

摘　　要：针对多窄带远场信号的无配对问题,提出了一种用L阵进行二维波达方向估计方法。此方法利用时间信息构造具有相同"伪信号"信息的伪数据矩阵来达到自动配对的目的。利用时间信息可以有效消除噪声影响,但是矩阵的构造与同样利用时间信息的辅助变量法是不同的,因此,所提方法具有阵列扩展的能力。仿真试验充分说明了该方法在精度估计、成功配对检测概率、多非相关信号源的估计能力方面都表现出优越的性能。A new method of two-dimensional（2-D） direction-of-arrival（DOA） estimation without pair-matching problem using an L-shaped array of sensors for multiple narrowband far field signals is presented in this paper. The technique uses temporal information of the signal to construct pseudo data matrices which have the same so-called pseudo-signal information to implement the automatic angle pairing. Specifically, the idea of employing the temporal information is related to the instrumental variable approach that can effectively eliminate the effect of additive noise, but the method of constructing matrices is different, since the proposed algorithm increases both the effective aperture and the number of sensors of the considered array. Finally, the numerical simulation shown that the proposed method is superior in accuracy of estimation, the probability of successful pair matching, and the estimated number of uncorrelated source.

关 键 词：L阵 伪数据 波达方向 二维 

分 类 号：TN911.23[电子电信—通信与信息系统]