摘要
采用全局寻优遗传算法进行浅海环境参数匹配场反演 ,研究了判断反演结果唯一性和不确定性的后验概率分析方法 ,并对反演中各环境参数的频率依赖性进行了讨论 ,最后用亚洲海实验(ASIAEX2 0 0 1 )数据对环境参数进行了有效的反演。
We participated from May 29 to June 9, 2001 in experiments in the East China Sea as a part of the Asian Seas International Acoustics Experiments (ASIAEX), ASIAEX′s main goal being contribution to a more fundamental understanding of ocean acoustic propagation and scattering in shallow-water regions while fostering cooperative research among Pacific Rim nations. We used matched field inversion method to determine the environment parameters. Section 1 deals with the matched field inversion method we used. Subsection 1.1 reviews the essentials of genetic algorithm. Subsection 1.2 discusses in some detail how to use a posteriori probability distribution in obtaining inversion results. Subsection 1.3 analyzes the frequency dependency of inverted parameters with Fig.2. Using the method described in section 1, we analyzed the ASIAEX2001 experimental data and obtained a posteriori probability distributions of 12 parameters as shown in Fig.3. These distributions show that six parameters--water depth, source depth, range, receiver depth, sediment top speed and sediment down speed--are preliminarily verified to be dependable. Further verification work needs to be done for the remaining six parameters.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2002年第4期637-641,共5页
Journal of Northwestern Polytechnical University
关键词
遗传算法
匹配场反演
后验概率分析
亚洲海实验
全局寻优
海洋环境参数
声场特性
matched-field inversion, genetic algorithm, a posteriori probability distribution, ASIAEX (Asian Seas International Acoustics Experiments)
