适用任意阵列的变换域二维波达角快速估计算法

doi:10.3969/j.issn.0372-2112.2013.05.017

电子学报 ›› 2013, Vol. 41 ›› Issue (5): 936-942.DOI: 10.3969/j.issn.0372-2112.2013.05.017

适用任意阵列的变换域二维波达角快速估计算法

闫锋刚¹, 金铭², 乔晓林²

1. 哈尔滨工业大学电子与信息工程学院,黑龙江哈尔滨 150001;
2. 哈尔滨工业大学(威海)信息工程研究所,山东威海 264209

收稿日期:2012-03-20 修回日期:2012-10-22 出版日期:2013-05-25
- 作者简介:
- 闫锋刚 男,1982年生于陕西咸阳.哈尔滨工业大学电子与信息工程系博士研究生,工程师.研究方向为雷达对抗,阵列信号处理,统计信号理论研究等. E-mail:yfglion@163.com

Fast 2-D DOA Estimation Method in Transformed Domain with Arbitrary Arrays

YAN Feng-gang¹, JIN Ming², QIAO Xiao-lin²

1. School of Electronics and Information Engineering,Harbin Institute of Technology,Harbin,Heilongjiang 150001,China;
2. School of Information Engineering,Harbin Institute of Technology at Weihai,Weihai,Shandong 264209,China

Received:2012-03-20 Revised:2012-10-22 Online:2013-05-25 Published:2013-05-25

摘要/Abstract

摘要： MUSIC(Multiple Signal Classification)算法是波达角(the Direction of Arrival,DOA)估计的经典算法之一,但其在二维DOA估计中因需进行二维谱峰搜索而计算量十分巨大.为降低MUSIC算法的计算量,本文在引入变换域DOA概念的基础上提出了一种能够适用于任意阵列结构的二维DOA快速估计算法,即变换域MUSIC(transformed domain-MUSIC,TD-MUSIC)算法.理论分析和仿真实验表明:该算法不但将空间谱峰搜索的范围减小一半而且具有更低维度的噪声子空间,因而其计算量远小于 MUSIC算法.同时,新算法具有比MUSIC更高的空间分辨率.

关键词: 变换域MUSIC, DOA估计, 虚拟辐射源, 交替投影算法, 奇异值分解

Abstract: As one of the most popular techniques for direction-of-arrival(DOA)estimation,the multiple signal classification(MUSIC)algorithm has a tremendous computational complexity for 2-D DOA estimation problems,which is mainly caused by an involved 2-D spectral search step.To reduce the complexity,a new algorithm named the transformed domain MUSIC(TD-MUSIC)for fast 2-D DOA estimation with arbitrary arrays is presented by this work based on a new concept of the transformed domain DOA.It is shown by theoretical analysis and experiment results that TD-MUSIC not only realizes a compression for the spectral search region,but also has a dimension-reduced noise subspace and hence,it requires much lower complexity than the standard MUSIC.Moreover,the new method also shows an improved resolution as compared to MUSIC.

Key words: transformed domain MUSIC, direction-of-arrival estimation, virtual source, alternate projection method(APM), singular value decomposition(SVD)

中图分类号:

TN959.2

闫锋刚, 金铭, 乔晓林. 适用任意阵列的变换域二维波达角快速估计算法[J]. 电子学报, 2013, 41(5): 936-942.

YAN Feng-gang, JIN Ming, QIAO Xiao-lin . Fast 2-D DOA Estimation Method in Transformed Domain with Arbitrary Arrays[J]. Acta Electronica Sinica, 2013, 41(5): 936-942.

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适用任意阵列的变换域二维波达角快速估计算法

Fast 2-D DOA Estimation Method in Transformed Domain with Arbitrary Arrays

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