Effects of reference sound speed on underwater acoustic direction-of-arrival estimation with horizontal plane array

被引：0

作者：

Chen, Feitong ^{[1
,2
]}

Guo, Lianghao ^{[1
]}

Liu, Yuhan ^{[1
]}

Liu, Jianjun ^{[1
]}

Zhang, Weiyu ^{[1
]}

Song, Jiapeng ^{[1
]}

Dong, Ge ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Acoust, State Key Lab Acoust & Marine Informat, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JASA EXPRESS LETTERS | 2025年 / 5卷 / 06期

关键词：

WAVE-GUIDE INVARIANT; LOCALIZATION;

D O I：

10.1121/10.0036837

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Direction-of-arrival (DOA) estimation of an underwater acoustic target is usually dependent on the selection of reference sound speed. For a horizontal line array, severe error of DOA estimation is induced when reference sound speed diverges from phase velocity. For a horizontal plane array, this work investigates the effects of reference sound speed on DOA estimation based on normal-mode theory, finding an independence between estimated azimuth and reference sound speed. Simulated and experimental results demonstrate that azimuth can be unbiasedly estimated and is irrelevant to reference sound speed below an upper bound in environments with various sound speed profiles.<br /> (c) 2025 Author(s). All article content, except where otherwise noted, islicensed under a Creative Commons Attribution (CC BY) license

引用

页数：8

共 19 条

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