arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2411.04599math.AP
收藏

逆声源问题的稳定性增强

Increasing stability for inverse acoustic source problems

Suliang Si

AI总结:

本文证明全空间R3中声波方程逆源问题在源项时间空间可分离且紧支撑时,其L2范数稳定性随时间增强,估计由Lipschitz数据偏差和高时间尾部组成,后者随时间衰减。

摘要:

本文研究了全空间R3中声波方程逆源问题的稳定性增强。目标是理解时域波动方程的稳定性增强现象。若源项的时间与空间变量可分离且具有紧支撑,则可建立声源函数L2范数的稳定性增强估计。该稳定性估计由两部分组成:Lipschitz型数据偏差和源函数的高时间尾部。随着时间增加,后者减小并变得可忽略。

英文摘要:

In this paper, we show the increasing stability of the inverse source problems for the acoustic wave equation in the full space R3.The goal is to understand increasing stability for wave equation in the time domain. If the time and spatial variables of the source term can be separated with compact support, the increasing stability estimates of the $L^2$-norm of the acoustic source function can be established. The stability estimates consist of two parts: the Lipschitz type data discrepancy and the high time tail of the source functions. As the time increases, the latter decreases and thus becomes negligible.

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。

↑