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Reconstruction of the scattering support of dielectric objects from near field data
Author(s) -
Gragnani Gian Luigi,
Mendez Maurizio Diaz
Publication year - 2012
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27098
Subject(s) - scattering , dielectric , microwave , regular polygon , field (mathematics) , optics , transformation (genetics) , near and far field , object (grammar) , domain (mathematical analysis) , microwave imaging , physics , computer science , mathematics , geometry , mathematical analysis , artificial intelligence , telecommunications , optoelectronics , chemistry , biochemistry , pure mathematics , gene
A method for reconstructing the convex scattering support of dielectric objects from near field data is presented.Two different strategies for solving the problem are discussed. The usual reconstruction of the convex scattering support is extended introducing a fast near field to far field transformation based on the analytical expression of an equivalent source in a circular domain. Results of both single and multiview approaches are shown. To evaluate the reconstruction capabilities, some quality parameters are introduced. Single view results could be subjected to detriment at some specific angles of propagation of the incident field, and this is related both to the angle of propagation and to the presence of sharp corners in the object. Multiview results always enclose the dielectric scatterers inside a scattering support smaller than the original investigation domain. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2314–2321, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27098