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

被引：0
作者：
Chun-xiao Li
Jian-long Li
Xian-yi Gong
Ming-fei Guo
机构：
[1] Zhejiang University,Department of Information Science and Electronic Engineering
[2] Hangzhou Applied Acoustics Research,MOE Key Laboratory of Mechanical Manufacture and Automation
[3] Zhejiang University of Technology,undefined
来源：
Journal of Zhejiang University-SCIENCE A | 2009年 / 10卷
关键词：
Decomposition of the time reversal operator (DORT); Time reversal mirror; Retrofocusing performance; O42; TP391; P7;
D O I：
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中图分类号：
学科分类号：
摘要：
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.
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页码：997 / 1008
页数：11
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