http://dx.doi.org/10.3934/dcdss.2015.8.547">
 

Document Type

Journal Article

Department/Unit

Department of Mathematics

Title

Fast imaging of electromagnetic scatterers by a two-stage multilevel sampling method

Language

English

Abstract

Some effective imaging schemes for inverse scattering problems were recently proposed in [13, 14] for locating multiple multiscale electromagnetic (EM) scatterers, namely a combination of components of possible small size and regular size compared to the detecting EM wavelength. In this paper, instead of using a single far-field measurement, we relax the assumption of one fixed frequency to multiple ones, and develop efficient numerical techniques to speed up those imaging schemes by adopting multi-frequency and Multilevel ideas in a two-stage manner. Numerical tests are presented to demonstrate the efficiency and the salient features of the proposed fast imaging scheme.

Keywords

Inverse scattering, Multilevel, Sampling method, Single-shot, Two-stage

Publication Date

2015

Source Publication Title

Discrete and Continuous Dynamical Systems - Series S

Volume

8

Issue

3

Start Page

547

End Page

561

Publisher

American Institute of Mathematical Sciences

ISSN (print)

19371632

ISSN (electronic)

19371179

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