Adjoint-based sampling methods for electromagnetic scattering

In this paper we investigate the efficient realization of sampling methods based on solutions of certain adjoint problems. This adjoint approach does not require the explicit knowledge of the Green's function for the background medium, and allows us to sample for all points and all dipole direc...

Full description

Saved in:
Bibliographic Details
Published in:Inverse problems 2010-07, Vol.26 (7), p.074006-074006
Main Authors: Egger, H, Hanke, M, Schneider, C, Schöberl, J, Zaglmayr, S
Format: Article
Language:English
Subjects:
Adjoints
Algorithms
Derivation
Electromagnetic scattering
Inverse problems
Mathematical models
Sampling methods
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper we investigate the efficient realization of sampling methods based on solutions of certain adjoint problems. This adjoint approach does not require the explicit knowledge of the Green's function for the background medium, and allows us to sample for all points and all dipole directions simultaneously; thus, several limitations of standard sampling methods are relieved. A detailed derivation of the adjoint approach is presented for two electromagnetic model problems, but the framework can be applied to a much wider class of problems. We also discuss a relation of the adjoint sampling method to standard backprojection algorithms, and present numerical tests that illustrate the efficiency of the adjoint approach.
ISSN:0266-5611
1361-6420
DOI:10.1088/0266-5611/26/7/074006