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

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...

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Bibliographic Details
Published inJournal of Zhejiang University. A. Science Vol. 10; no. 7; pp. 997 - 1008
Main Authors Li, Chun-xiao, Li, Jian-long, Gong, Xian-yi, Guo, Ming-fei
Format Journal Article
LanguageEnglish
Published Hangzhou Zhejiang University Press 01.07.2009
Subjects
Civil Engineering
Classical and Continuum Physics
Engineering
Industrial Chemistry/Chemical Engineering
Mechanical Engineering
噪声环境
定量模拟
目标检测
算子方法
经营者
Retrofocusing performance
Decomposition of the time reversal operator (DORT)
TP391
Time reversal mirror
O42
P7
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Summary: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.
Bibliography:TN912.34
O175
Decomposition of the time reversal operator （DORT）, Time reversal mirror, Retrofocusing performance
33-1236/O4
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1673-565X
1862-1775
DOI:10.1631/jzus.A0820563