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Received: 2008-07-14

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Crosschecked: 2009-04-27

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Journal of Zhejiang University SCIENCE A 2009 Vol.10 No.7 P.997~1008

http://doi.org/10.1631/jzus.A0820563


Focusing with the decomposition of the time reversal operator method in noisy environments


Author(s):  Chun-xiao LI, Jian-long LI, Xian-yi GONG, Ming-fei GUO

Affiliation(s):  Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   JLLi@zju.edu.cn

Key Words:  Decomposition of the time reversal operator (DORT), Time reversal mirror, Retrofocusing performance


Chun-xiao LI, Jian-long LI, Xian-yi GONG, Ming-fei GUO. Focusing with the decomposition of the time reversal operator method in noisy environments[J]. Journal of Zhejiang University Science A, 2009, 10(7): 997~1008.

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publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A0820563"
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T1 - Focusing with the decomposition of the time reversal operator method in noisy environments
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A1 - Jian-long LI
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J0 - Journal of Zhejiang University Science A
VL - 10
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SP - 997
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A0820563


Abstract: 
This paper presents a detailed analysis of the effects of noise (reverberation) on the focusing performance of decomposition of the time reversal operator (DORT) in a noise-limited case and in a reverberation-limited case, respectively. Quantitative results obtained from simulations and experiments are presented. The results show the DORT method can be efficiently applied to target detection with enough source level to yield significant backscatter. For a target placed on the bottom, the influence of the reverberation on the focusing performance is slight. However, distinguishing between a target and constant backscattering returning from strong local clutter on the bottom (false alarms) needs further research.

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

Reference

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