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On the scattering of point-generated electromagnetic waves by a perfectly conducting sphere, and related near-field inverse problems
- Publication Year :
- 2003
-
Abstract
- A spherical electromagnetic wave is scattered by abounded perfectly conducting obstacle. A generalization of the plane-wave optical theorem is established. For a spherical scatterer, low frequency results are obtained by approximating the known exact solution (separation of variables). In particular, a closed-form approximation of the scattered wavefield at the source of the incident spherical wave is obtained. This leads to the solution of a near-field inverse problem, where both the source and coincident receiver are located at several points in the vicinity of a small sphere. The same inverse problem is also treated from the knowledge of the leading order term in the low-frequency asymptotic expansion of the scattering cross-section. © 2003 WILEY-VCH Verlag GmbH & Co. KGaA.
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.od......2127..ca5de8e2be916e90ca9ab79e7ea5fc5c