Matched-field inversion of sound speed profile in shallow water using a parallel genetic algorithm

被引：0
作者：
Yanxin Yu
Zhenglin Li
Li He
机构：
[1] Chinese Academy of Sciences,National Laboratory of Acoustics, Institute of Acoustics
[2] Chinese Academy of Sciences,Haikou Laboratory of Acoustics, Institute of Acoustics
[3] Chinese Academy of Sciences,Graduate School
来源：
Chinese Journal of Oceanology and Limnology | 2010年 / 28卷
关键词：
matched-field processing; sound speed profile; parallel genetic algorithm;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A sound speed profile plays an important role in shallow water sound propagation. Concurrent with in-situ measurements, many inversion methods, such as matched-field inversion, have been put forward to invert the sound speed profile from acoustic signals. However, the time cost of matched-field inversion may be very high in replica field calculations. We studied the feasibility and robustness of an acoustic tomography scheme with matched-field processing in shallow water, and described the sound speed profile by empirical orthogonal functions. We analyzed the acoustic signals from a vertical line array in ASIAEX2001 in the East China Sea to invert sound speed profiles with estimated empirical orthogonal functions and a parallel genetic algorithm to speed up the inversion. The results show that the inverted sound speed profiles are in good agreement with conductivity-temperature-depth measurements. Moreover, a posteriori probability analysis is carried out to verify the inversion results.
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页码：1080 / 1085
页数：5
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