arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.04609math.NAcs.NA
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部分数据声源反演问题的质量贝叶斯方法

Quality-Bayesian approach to inverse acoustic source problems with partial data

Zhaoxing Li, Yanfang Liu, Jiguang Sun, Liwei Xu

摘要:

本文提出了一种结合直接采样和贝叶斯反演的质量贝叶斯方法,利用部分数据重建未知声源的位置和强度。首先,我们通过构造一个新的指示函数来获得源的近似位置,从而扩展了直接采样方法。分析指示器的行为。其次,反问题被公式化为一个使用贝叶斯公式的统计推断问题。证明了后验分布的适定性。在第一步中获得的源位置被编码在先验中。然后使用Metropolis-Hastings MCMC算法来探索后验密度。这两个步骤使用相同的物理模型和测量数据。数值实验表明,该方法在部分数据情况下也是有效的。

英文摘要:

A quality-Bayesian approach, combining the direct sampling method and the Bayesian inversion, is proposed to reconstruct the locations and intensities of the unknown acoustic sources using partial data. First, we extend the direct sampling method by constructing a new indicator function to obtain the approximate locations of the sources. The behavior of the indicator is analyzed. Second, the inverse problem is formulated as a statistical inference problem using the Bayes' formula. The well-posedness of the posterior distribution is proved. The source locations obtained in the first step are coded in the priors. Then an Metropolis-Hastings MCMC algorithm is used to explore the posterior density. Both steps use the same physical model and measured data. Numerical experiments show that the proposed method is effective even with partial data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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