一种稳健的高分辨方位估计方法及其应用  

A Robust High Resolution Bearing Estimation Method and Its Application

作　　者：王永刚[1] 曹传剑[2] 戴琳琳[1] 李靖[1] 宋福杰 WANG Yong-gang;CAO Chuan-jian;DAI Lin-lin;LI Jing;SONG Fu-jie(Qingdao Huanghai University,College of Big Data,Qingdao 266427,China;Qingdao Huanghai University,School of Intelligent Manufacturing,Qingdao 266427,China)

机构地区：[1]青岛黄海学院大数据学院,山东青岛266427 [2]青岛黄海学院智能制造学院,山东青岛266427

出　　处：《火力与指挥控制》2021年第10期147-152,共6页Fire Control & Command Control

基　　金：2018年度青岛市社会科学规划研究项目(QDSKL1801229);2019年山东省高等学校青创人才引育计划建设团队基金资助项目。

摘　　要：为解决快拍数不足情况下MUSIC高分辨方位估计方法输出空间谱信噪干比损失较大的问题,提出一种稳健的高分辨方位估计方法—CSMUSIC方法,并将其应用于近场声源分布测量中。根据时频变换过程,提出频域协方差矩阵估计过程可用快拍数;基于复域变换处理,解决了复域协方差矩阵估计求取过程可用快拍数;分析了CMUSIC方法实现流程及其降低频域快拍数不足导致的信干噪比损失;通过数值仿真验证了其对目标位置的检测及定位性能。数值仿真处理结果表明,该方法在保持MUSIC方法高分辨的同时,克服了频域快拍数不足引起的信干噪比损失较大问题,实现了对目标位置估计,提高了MUSIC近场声源分布测量方法对目标位置的检测及定位性能。In order to solve the large loss of spatial spectrum signal to interference and noise ratio output by the high resolution of MUSIC bearing estimation method under the case of insufficient number of snapshots,a robust high resolution bearing estimation method,CMUSIC method is proposed and applied to near-field orgin of sound distribution measurement.Firstly,according to time frequency transform action process,the number of snapshots is expounded for covariance estimation in frequency dimension.Secondly,based on complex domain transform action,the number of snapshots is solved for covariance matrix estimation and solution in complex domain.Then,the realization process of CMUSIC method and the reduction of the loss of signal to interference and noise ration due to the insufficient number of snapshots in frequency domain are analyzed.Lastly,the detection of target location and localization performance is verified via numerical simulation.Numerical simulation results show that,while keeping the high resolution of MUSIC method,the large loss problem of the signal to interference and noise ratio caused by insufficient number of snapshots in frequency domain is overcome,the target localization estimation is realized,and the detection of target location and localization performance of MUSIC method are improved.

关 键 词：声源分布测量 信干噪比 频域快拍数 复域处理 

分 类 号：TN912[电子电信—通信与信息系统]