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

被引：2
|
作者：
Li, Chun-xiao [1 ]
Li, Jian-long [1 ]
Gong, Xian-yi [1 ,2 ]
Guo, Ming-fei [3 ]
机构：
[1] Zhejiang Univ, Dept Informat Sci & Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China
[2] Hangzhou Appl Acoust Res, Hangzhou 310012, Zhejiang, Peoples R China
[3] Zhejiang Univ Technol, MOE Key Lab Mech Manufacture & Automat, Hangzhou 310014, Zhejiang, Peoples R China
来源：
JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A | 2009年 / 10卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Decomposition of the time reversal operator (DORT); Time reversal mirror; Retrofocusing performance; INDEPENDENT WAVE-GUIDE; PHASE-CONJUGATION; REVERBERATION; MIRROR; TARGET; ENHANCEMENT; OCEAN; ECHO;
D O I：
10.1631/jzus.A0820563
中图分类号：
T [工业技术];
学科分类号：
08 ;
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.
引用
收藏
页码：997 / 1008
页数：12
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