基于矩阵奇异值分解时频分布相关水下瞬态声源定位  

Underwater Transient Sound Source Localization Based on Matrix Singular Value Decomposition of Time-Frequency Distribution

作　　者：魏尚飞 韩东[2] 杨美娇 张海勇[2] WEI Shangfei;HAN Dong;YANG Meijiao;ZHANG Haiyong(Midshipmen Group Five,Dalian Naval Academy,Dalian 116018,China;Department of Information System,Dalian Naval Academy,Dalian 116018,China)

机构地区：[1]海军大连舰艇学院学员五大队,辽宁大连116018 [2]海军大连舰艇学院信息系统系,辽宁大连116018

出　　处：《电声技术》2020年第12期16-22,共7页Audio Engineering

基　　金：基础加强计划技术领域基金项目(No.2019-JCJQ-JJ-036);国家自然科学基金(No.11374001)。

摘　　要：水下声源定位是水声研究领域的热点和难点问题。针对水下声源定位问题,提出一种使用单水听器接收信号并通过其时频分布图做相关的声源深度距离估计方法。利用简正波在距离上的频散特性和深度上的模态振幅分布,对实际接收信号和模拟接收信号进行时频表示,提取频散特性和模态振幅分布带来的距离和深度信息,通过时频矩阵的相关实现声源定位。针对相关,提出一种利用矩阵奇异值分解匹配相关时频矩阵的新方法。通过仿真验证该方法的抗噪声性能,分析该方法在不同失配环境条件下的定位性能。仿真结果表明,该方法不仅对噪声有很好的抑制作用,而且对环境失配有较好的宽容性,在实际海洋环境具有一定的应用价值。Underwater sound source localization is a hot and difficult problem in the field of underwater acoustic research.Aiming at the problem of underwater sound source localization,a method of sound source depth and distance estimation is proposed,which uses a single hydrophone to receive the signal and make correlation through its time-frequency distribution.Using the dispersion characteristics of normal mode in the distance and the distribution of the modal amplitude in the depth,the time-frequency representation of the actual received signal and the simulated received signal is carried out,and its purpose to extract the distance and depth information brought by the dispersion characteristics and the distribution of modal amplitude,and the sound source localization is realized through the correlation of time-frequency matrix.A new method of matching correlation time-frequency matrix using matrix singular value decomposition is proposed.The anti-noise performance of the method is verified by simulation,and the localization performance in different mismatch environment is analyzed.The simulation results show that,this method has a good effect on noise suppression,moreover,it has a good tolerance for environmental mismatch,which has a certain application value in the actual marine environment.

关 键 词：时频分布 奇异值分解 声源定位 

分 类 号：TN911.23[电子电信—通信与信息系统]