AN INVERSE SOURCE PROBLEM FOR THE STOCHASTIC WAVE EQUATION

被引:4
作者
Feng, Xiaoli [1 ]
Zhao, Meixia [1 ]
Li, Peijun [2 ]
Wang, Xu [2 ]
机构
[1] Xidian Univ, Sch Math & Stat, Xian 713200, Peoples R China
[2] Purdue Univ, Dept Math, W Lafayette, IN 47907 USA
关键词
  Stochastic wave equation; inverse source problem; fractional Brownian motion; uniqueness; ill-posedness; HYPERBOLIC PROBLEM; GLOBAL UNIQUENESS; STABILITY; DRIVEN; FORMULATION;
D O I
10.3934/ipi.2021055
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
This paper is concerned with an inverse source problem for the stochastic wave equation driven by a fractional Brownian motion. Given the random source, the direct problem is to study the solution of the stochastic wave equation. The inverse problem is to determine the statistical properties of the source from the expectation and covariance of the final-time data. For the direct problem, it is shown to be well-posed with a unique mild solution. For the inverse problem, the uniqueness is proved for a certain class of functions and the instability is characterized. Numerical experiments are presented to illustrate the reconstructions by using a truncation-based regularization method.
引用
收藏
页码:397 / 415
页数:19
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