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Inverse random source scattering for the Helmholtz equation in inhomogeneous media
| Content Provider | Scilit |
|---|---|
| Author | Li, Ming Chen, Chuchu Li, Peijun |
| Copyright Year | 2017 |
| Description | Journal: Inverse Problems This paper is concerned with an inverse random source scattering problem in an inhomogeneous background medium. The wave propagation is modeled by the stochastic Helmholtz equation with the source driven by additive white noise. The goal is to reconstruct the statistical properties of the random source such as the mean and variance from the boundary measurement of the radiated random wave field at multiple frequencies. Both the direct and inverse problems are considered. We show that the direct problem has a unique mild solution by a constructive proof. For the inverse problem, we derive Fredholm integral equations, which connect the boundary measurement of the radiated wave field with the unknown source function. A regularized block Kaczmarz method is developed to solve the ill-posed integral equations. Numerical experiments are included to demonstrate the effectiveness of the proposed method. |
| Related Links | http://pdfs.semanticscholar.org/e083/2b87c40232de589f6f9d5a5fd90fb94558bc.pdf http://iopscience.iop.org/article/10.1088/1361-6420/aa99d2/pdf |
| ISSN | 02665611 |
| e-ISSN | 13616420 |
| DOI | 10.1088/1361-6420/aa99d2 |
| Journal | Inverse Problems |
| Issue Number | 1 |
| Volume Number | 34 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2017-12-12 |
| Access Restriction | Open |
| Subject Keyword | Journal: Inverse Problems Interdisciplinary Mathematics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Theoretical Computer Science Signal Processing Mathematical Physics Computer Science Applications |
