文章摘要
杨坤德,马远良,赵亚梅,李蓉艳.浅海环境参数宽带匹配场反演研究[J].声学技术,2002,(3):150~153
浅海环境参数宽带匹配场反演研究
Broadband matched-field inversion for shallow water environment parameters
投稿时间:2001-09-20  修订日期:2001-12-07
DOI:
中文关键词: 宽带匹配场反演  目标函数  遗传算法  亚洲海实验
英文关键词: objective function  matched field inversion  genetic algorithms  ASIAEX2001
基金项目:国家自然科学基金(60072025)
作者单位
杨坤德 西北工业大学航海工程学院声学所, 西安, 710072 
马远良 西北工业大学航海工程学院声学所, 西安, 710072 
赵亚梅 西北工业大学航海工程学院声学所, 西安, 710072 
李蓉艳 西北工业大学航海工程学院声学所, 西安, 710072 
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中文摘要:
      宽带匹配场反演是获取海洋环境参数信息的有效方法,选择合适的反演目标函数对环境参数的估计结果十分重要。文章研究了浅海环境参数宽带匹配场反演的各种目标函数建立方法,同时结合亚洲海实验(ASIAEX2001)数据采用遗传全局寻优算法对该海域环境参数进行了反演,并对反演结果尤其是沉积层参数的合理性进行了分析。
英文摘要:
      The goal of the matched field inversion (MFP) is to find the physical parameters of the environment.To overcome the inaccuracy and instability of single frequency inversion,many researchers used broadband MFP inversion to estimate the parameters.The inversion process can be separated five parts:(1) discretization of the environment;(2) efficient and accurate forward modeling;(3) reasonable objective function;(4) efficient optimization procedures;(5) uncertainty analysis.A complete inversion requires equal attention to all five items. In this paper,broadband multi frequencies matched field inversion method was used to determine the environment parameters in shallow water.According to different conditions,several broadband objective functions were presented.Using ASIAEX2001 (Asian Seas International Acoustics Experiment)experimental data from explosive sources in the ECS (East China Sea) and genetic algorithms,we got the environment parameters especially in sediment and analyzed the inversion results.
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