An inverse source problem for the stochastic wave equation

Abstract

<p style='text-indent:20px;'>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.</p>

An inverse random source problem for the Helium production-diffusion equation driven by a fractional Brownian motion

“…In [18], Li considered the random source problems for the time-harmonic acoustic and elastic wave equations in two and three dimensions, where the source term was assumed to be a microlocally isotropic generalized Gaussian random function. Li and Feng discussed the inverse random source problem for wave equation and time fractional diffusion equation, where the source was driven by a fractional Brownian motion in [9,10].…”