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arXiv 2403.08440math.AP
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时域声学逆源问题的稳定性增强

Increasing stability for inverse acoustic source problems in the time domain

Chun Liu, Suliang Si, Guanghui Hu, Bo Zhang

AI总结:

针对全空间声波方程逆源问题,利用Dirichlet边界数据,基于Huygens原理、Fourier变换和解析延拓界,建立了随参数区间长度增加的稳定性增强估计。

摘要:

本文研究全空间R^3中声波方程的逆源问题,其中源项在时间和空间变量上均具有紧支撑。主要目标是探讨波动方程在给定参数(如源函数时间分量的带宽)区间长度下的稳定性增强性质。我们仅利用Dirichlet边界数据,建立了源函数L^2范数的稳定性增强估计。我们的方法依赖于Huygens原理、Fourier变换以及解析函数延拓的显式界。

英文摘要:

This paper is concerned with inverse source problems for the acoustic wave equation in the full space R^3, where the source term is compactly supported in both time and spatial variables. The main goal is to investigate increasing stability for the wave equation in terms of the interval length of given parameters (e.g., bandwith of the temporal component of the source function). We establish increasing stability estimates of the L^2 -norm of the source function by using only the Dirichlet boundary data. Our method relies on the Huygens principle, the Fourier transform and explicit bounds for the continuation of analytic functions.

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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