A range and depth estimation method using the time delay structure of bottom reflection in deep sea bottom bounce area  

作　　者：XIE Qichen CHI Cheng ZHANG Bo HUANG Haining 

机构地区：[1]Institute of Acoustics,Chinese Academy of Sciences,Beijing,100190 [2]Key Laboratory of Science and Technology on Advanced Underwater Acoustic Signal Processing,Chinese Academy of Sciences,Beijing,100190 [3]University of Chinese Academy of Sciences,Beijing,100049

出　　处：《Chinese Journal of Acoustics》2024年第3期275-289,共15页声学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(62001469).

摘　　要：When the source-receiver depth relationship is unknown,using the time delay differences for distance and depth estimation may result in a pseudo source.To address the issue,a method for directly estimating distance and depth using four time delay differences has been proposed.This method analyzes the relationship of four time delay differences between multipath,by utilizing the difference in the same time delay difference between the pseudo source and the true position,a fuzzy plane is constructed for localization.The pseudo source can be eliminated without determining the source-receiver depth relationship,which can be achieved on a single hydrophone.The effectiveness of the method is verified through simulation experiments and error analysis.The sea experiment shows that the method successfully achieves distance and depth estimation of targets ranging from 11.0 km to 16.5 km on two single hydrophones at different depths,with root mean square errors of less than 1.1 km and 54 m,respectively.

关 键 词：DELAY estimation METHOD 

分 类 号：TB56[交通运输工程—水声工程]