arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2309.02444math.NAcs.NAmath-phmath.MP
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一种用于时域声学反源问题的新型采样方法

A novel sampling method for time domain acoustic inverse source problems

Jiaru Wang, Bo Chen, Qingqing Yu, Yao Sun

AI总结:

针对时域声学反源问题,提出一种基于新型指示函数的直接采样方法,可重构多点源及曲线源,实现简单、计算成本低,并通过理论分析与数值实验验证了有效性。

摘要:

本文关注的是重构时间依赖的多点源以及形式为$λ(t)τ(x)δ_L(x)$的曲线$L$上的源的反声散射问题。提出了一种具有新型指示函数的直接采样方法来重构这些源。该采样方法易于实现且计算成本低。基于该采样方法,提供了数值算法以获取源的位置和强度。文中给出了指示函数的理论分析和数值实验,以证明所提出方法的有效性。

英文摘要:

This paper is concerned with the inverse acoustic scattering problems of reconstructing time-dependent multiple point sources and sources on a curve $L$ of the form $λ(t)τ(x)δ_L(x)$. A direct sampling method with a novel indicator function is proposed to reconstruct the sources. The sampling method is easy to implement and low in calculation cost. Based on the sampling method, numerical algorithms are provided to get the positions and intensities of the sources. Both theoretical analysis of the indicator function and numerical experiments are provided to show the effectiveness of the proposed method.

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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