Bayes匹配场地声参数反演:多步退火Gibbs采样算法

发布时间：2018-01-17 20:12

本文关键词：Bayes匹配场地声参数反演:多步退火Gibbs采样算法　出处：《兵工学报》2017年07期 　论文类型：期刊论文

【摘要】：为实现海洋地声环境参数的快速高效反演,提出多步退火Gibbs(Multi-AG)采样算法,可消除因参数搜索空间设置对参数反演结果的影响,并有效解决Bayes匹配场高维参数反演过程中常见的运算量大、旁瓣高等问题。分析待反演地声参数对匹配场处理器的敏感性,用以制定多步反演与退火方案,利用Gibbs采样算法反演敏感性级别最高的参数,计算其均值并代入后续反演步骤,进而采用退火Gibbs采样算法逐步反演后续参数;利用数值仿真实验对比Metropolis-Hastings算法、Gibbs采样算法、快速Gibbs采样算法和Multi-AG采样算法的反演效果。实验结果表明,与其他3种算法相比,Multi-AG采样算法可通过最小的计算量得到均方差最小、精度最高的参数反演结果。
[Abstract]:In order to realize fast and efficient retrieval of ocean acoustic environment parameters, a multi-step annealing Gibbsberg Multi-AGG sampling algorithm is proposed, which can eliminate the effect of parameter search space setting on parameter inversion results. And effectively solve the Bayes matching field in the process of high-dimensional parameters inversion common problems such as large computation, high sidelobe, etc., and analyze the sensitivity of the acoustic parameters to the matching field processor. The method is used to formulate the multi-step inversion and annealing scheme, using the Gibbs sampling algorithm to retrieve the most sensitive parameters, calculate the mean value and substitute the subsequent inversion steps. Then the annealing Gibbs sampling algorithm is used to retrieve the subsequent parameters step by step. Numerical simulation experiments are used to compare the Metropolis-Hastings algorithm and the Gibbs sampling algorithm. The inversion effect of fast Gibbs sampling algorithm and Multi-AG sampling algorithm. The experimental results show that compared with the other three algorithms. The Multi-AG sampling algorithm can obtain the minimum mean square error and the highest precision parameter inversion results.
【作者单位】：海军海洋测绘研究所;哈尔滨工程大学水声工程学院;
【基金】：国家自然科学基金项目(41406004)
【分类号】：P733.2;TB56
【正文快照】： Geoacoustic Parameters Inversion of Bayes Matched-field:A Multi-annealing Gibbs Sampling AlgorithmGAO Fei1,PAN Chang-ming1,SUN Lei1,2(1.Naval Institute of Hydrographic Surveying and Charting,Tianjin 300061,China;2.College of Underwater Acoustic Engineeri

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