基于路径选择的深海水下运动目标被动深度估计  

Depth estimation of moving underwater source based on routes choosing

作　　者：刘炎堃 郭永刚[1] 李整林[1] 李风华[1] 张波 LIU Yankun;GUO Yonggang;LI Zhenglin;LI Fenghua;ZHANG Bo(State Key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院声学研究所声场声信息国家重点实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《应用声学》2020年第5期647-655,共9页Journal of Applied Acoustics

基　　金：国家自然科学基金项目(11434012,11874061);中国科学院联合基金项目(6141A010501)。

摘　　要：深海水下运动目标的深度估计是目标分辨与识别中的重要一环。基于深海运动目标在深海中的直达波与海面反射波的到达时延与位置之间的关系,寻找时延图上运动目标的候选路径,利用候选路径模拟目标的运动路径,提出了一种可用单水听器实现的水下运动目标深度估计方法。通过用候选路径的估计时延与实际接收时延的比较对路径进行筛选,从而减少了需要的位置先验信息。2018年在南中国海进行的深海实验数据处理的结果表明该估计方法可行,对于实验中距离15 km以内的拖曳声源,深度相对估计误差可以达到15%以内。Depth estimation of moving targets in deep water is an important part of target discrimination and recognition,which is investigated in this paper.Since the delays between the direct and surface-reflected arrivals are related to source position,the possible moving routes can be chosen to represent the source movement.This can be implemented with a single hydrophone,and the priori information of target’s position is diminished by selecting routes with proper estimate time delay.The results of deep ocean experimental data processing conducted in the South China Sea in 2018 indicate that this method works.For the tow sound source within a distance of 15 km in the experiment,the relative estimation error of the depth can be within 15%.

关 键 词：多径时延 路径选择 深度估计 

分 类 号：TB566[交通运输工程—水声工程]