基于矢量阵的相干信源方位估计研究
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- 英文论文题名：The study on the DOA estimation of coherent sources based on acoustic vector sensor array
- 论文作者：代光华 ; 马树青 ; 陈羽 ; 吴艳群 ; 孟洲
- 英文论文作者：DAI Guang-hua ; MA Shu-qing ; CHEN Yu ; WU Yan-qun ; MENG Zhou ; cademy of Ocean Science and Engineering ; National University of Defense Technology
- 年：2016
- 作者机构：国防科学技术大学海洋科学与工程研究院;
- 论文关键词：相干信源 ; MVDR算法 ; MUSIC算法 ; 空间谱估计 ; 空间平滑算法
- 英文论文关键词：coherent sources ; MVDR algorithm ; MUSIC algorithm ; spatial spectrum estimation ; spatial smoothing algorithm
- 会议召开时间：2016-10-28
- 会议录名称：2016年全国声学学术会议论文集
- 语种：中文
- 分类号：TN911.7
- 学会代码：OGSM
- 会议名称：2016年全国声学学术会议
- 会议地点：中国湖北武汉
- 主办单位：中国声学学会
- 学会名称：中国声学学会
- 页数：4
- 文件大小：311k
- 原文格式：D
- 会议级别：全国
摘要
本文在矢量阵的基础上,使用MVDR算法和MUSIC算法对信号进行方位估计。在实际的水声信道中,存在界面反射的多径干扰信号,对于期望信号来说是相干干扰。利用MVDR算法和MUSIC算法直接对相干信源进行方位分辨时,处理性能下降。解相干算法一直是空间谱估计的重要研究方向,本文对空间平滑算法进行了理论推导,然后使用空间平滑算法对多径信号进行解相干处理,解相干后再进行空间谱估计。在此基础上,分析研究MVDR算法和MUSIC算法空间谱估计性能。
This paper uses MVDR algorithm and MUSIC algorithm doing spatial spectrum estimation, based on acoustic vector sensor array. In the actual underwater acoustic channel, there are multipath interference reflected by the boundary, these are coherent to the desired signal. Using MVDR algorithm and MUSIC algorithm distinguishes the positions of the coherent sources directly which can not obtain good effect. Coherent solutions algorithm is an important research area of spatial spectrum estimation. This paper does the theoretical derivation of the spatial smoothing algorithm. Using the spatial smoothing algorithm does coherent processing, and then, does the spatial spectrum estimation. And on this basis, this paper analyzes the spatial spectrum estimation performance of MVDR algorithm and MUSIC algorithm.
This paper uses MVDR algorithm and MUSIC algorithm doing spatial spectrum estimation, based on acoustic vector sensor array. In the actual underwater acoustic channel, there are multipath interference reflected by the boundary, these are coherent to the desired signal. Using MVDR algorithm and MUSIC algorithm distinguishes the positions of the coherent sources directly which can not obtain good effect. Coherent solutions algorithm is an important research area of spatial spectrum estimation. This paper does the theoretical derivation of the spatial smoothing algorithm. Using the spatial smoothing algorithm does coherent processing, and then, does the spatial spectrum estimation. And on this basis, this paper analyzes the spatial spectrum estimation performance of MVDR algorithm and MUSIC algorithm.
引文
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[2]黄聪.强相干干扰抑制技术研究[D].哈尔滨工程大学,2012.
[3]Wax M,Sheinvald J.Direction finding of coherent signals via spatial smoothing for uniform circular arrays.IEEE Trans.Antennas Propagat,1994,42(5):613-620.
[4]王永良,陈辉等.空间谱估计理论与算法[M].清华大学出版社,2004.
[5]尹广旭.基于多重信号分类算法的宽带相干源空间谱估计[D].吉林大学,2013.