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

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 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Zhejiang University - Science A Springer Journals

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

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References (21)

Publisher
Springer Journals
Copyright
Copyright © 2009 by Zhejiang University and Springer-Verlag GmbH
Subject
Engineering; Industrial Chemistry/Chemical Engineering; Mechanics, Fluids, Thermodynamics; Civil Engineering; Mechanical Engineering
ISSN
1673-565X
eISSN
1862-1775
DOI
10.1631/jzus.A0820563
Publisher site
See Article on Publisher Site

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.

Journal

Journal of Zhejiang University - Science ASpringer Journals

Published: Jul 1, 2009

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