Geometry Calibration Technique for Hydrophone Array with Sources in Near Field

被引：2
作者：
Zou, Nan [1 ]
Wang, Yan
Fu, Jin
Liang, Guolong
机构：
[1] Harbin Engn Univ, Coll Underwater Acoust Engn, Harbin 150001, Peoples R China
来源：
JOURNAL OF COMPUTATIONAL ACOUSTICS | 2015年 / 23卷 / 04期
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
Geometry calibration; near field; multipath; hydrophone array; ANTENNA; SHAPE;
D O I：
10.1142/S0218396X15400081
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
A new algorithm involving flank array geometry calibration under strong multipath conditions is proposed to address the problem of installation errors and the shell deformation. The derived linear mapping relationship between geometric error of sensors and signal eigenvector reduces the calculating difficulty in near calibration mode. By regarding the reflection as coherent visual sources in known position, the compensation strategy of strong multipath matching is put forward. Cramer-Rao bound (CRB) analysis for the calibration mode is employed. Numerical simulations and lake trials verify the efficiency of the proposed algorithm and illustrate the performance improvement under strong multipath conditions.
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页数：14
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