利用船舶噪声线谱的TDOA和FDOA定位方法研究  

Research on TDOA and FDOA positioning method using ship noise line spectrum

作　　者：赵雨佳 邢传玺[1] 姜佳圆 许奕 ZHAO Yu-jia;XING Chuan-xi;JIANG Jia-yuan;XU Yi(School of Electrical and Information Technology,Yunnan Minzu University,Kunming 650500,China)

机构地区：[1]云南民族大学电气信息工程学院,云南昆明650500

出　　处：《云南民族大学学报（自然科学版）》2024年第5期638-644,共7页Journal of Yunnan Minzu University:Natural Sciences Edition

基　　金：国家自然基金(61761048);云南省基础研究专项面上项目(202101AT070132)。

摘　　要：船舶辐射噪声作为海洋环境噪声的主要来源,是众多噪声源综合作用的结果.船舶辐射噪声中含有丰富的特征信息,是对目标进行跟踪、定位的重要依据.针对两阶段加权最小二乘法(TSWLS)在第一阶段引入多余变量引起的定位不准确的问题,将船舶辐射噪声线谱作为信号源,提出了利用入侵杂草优化算法(IWO)和加权最小二乘算法(WLS)的水下到达时间差(TDOA)和到达频率差(FDOA)联合定位的方法.仿真结果表明,噪声方差在-40 dB到0 dB时,本文所提方法的速度以及位置的偏差和均方根误差均低于传统的两阶段加权最小二乘法(TSWLS)和迭代加权最小二乘法(ICWLS).所以浅海环境下利用船舶辐射噪声线谱对其进行定位对军事和安全保障方面都具有重要意义.Ship radiated noise is the main source of arine environmental noise.Due to the influence of various mechanical operation and water flow,ship radiated noise is composed of a variety of noise sources.The underwater radiated noise of ships contains abundant characteristic information,which is an important basis for tracking and positioning.Aiming at the inaccurate positioning problem caused by the introduction of redundant variables in the first stage of two-stage weighted least squares(TSWLS),this paper proposes a joint positioning method of underwater time difference of arrival(TDOA)and frequency difference of arrival(FDOA)using invasive weed optimization algorithm(IWO)and weighted least squares(WLS),taking the line spectrum of ship radiated noise as the signal source.The simulation results show that the velocity and position deviation and root mean square error of the proposed method are lower than those of the traditional two-stage weighted least squares(TSWLS)and iterative weighted least squares(ICWLS)in the case of small noise with noise variance of 40 dB to 0 dB.Therefore,it is of great significance for military and security to use ship radiated noise line spectrum to locate it in shallow water environment.

关 键 词：船舶辐射噪声线谱 最小二乘 入侵杂草优化算法 到达时间差 到达频率差 

分 类 号：TB567[交通运输工程—水声工程]