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CLC number: TB566

On-line Access: 2010-04-28

Received: 2009-04-16

Revision Accepted: 2009-09-16

Crosschecked: 2010-03-29

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Journal of Zhejiang University SCIENCE C 2010 Vol.11 No.5 P.401-406

http://doi.org/10.1631/jzus.C0910212


Robust time reversal processing for active detection of a small bottom target in a shallow water waveguide


Author(s):  Xiang Pan, Jian-long Li, Wen Xu, Xian-yi Gong

Affiliation(s):  Institute of Information and Communication Engineering, Zhejiang University, Hangzhou 310027, China, Zhejiang Provincial Key Laboratory of Information Network Technology, Hangzhou 310027, China

Corresponding email(s):   panxiang@zju.edu.cn, jlli@zju.edu.cn, wxu@zju.edu.cn, gongxy@zju.edu.cn

Key Words:  Robustness, Time reversal processing, Bottom target detection, Uncertain environment, Sonar


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Xiang Pan, Jian-long Li, Wen Xu, Xian-yi Gong. Robust time reversal processing for active detection of a small bottom target in a shallow water waveguide[J]. Journal of Zhejiang University Science C, 2010, 11(5): 401-406.

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%J Journal of Zhejiang University SCIENCE C
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A1 - Xiang Pan
A1 - Jian-long Li
A1 - Wen Xu
A1 - Xian-yi Gong
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SP - 401
EP - 406
%@ 1869-1951
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.C0910212


Abstract: 
With the spatial-temporal focusing of acoustic energy, time reversal processing (TRP) shows the potential application for active target detection in shallow water. To turn the ‘potential’ into a reality, the TRP based on a model source (MS) instead of a physical probe source (PS) is investigated. For uncertain ocean environments, the robustness of TRP is discussed for the narrowband and broadband signal respectively. The channel transfer function matrix is first constructed in the acoustic perturbation space. Then a steering vector for time reversal transmission is obtained by singular value decomposition (SVD) of the matrix. For verification of the robust TRP, the tank experiments of time reversal transmission focusing and its application for active target detection are undertaken. The experimental results have shown that the robust TRP can effectively detect and locate a small bottom target.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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