A microwave imaging approach based on the integration of a subspace-base optimization method (SOM) and a multi-focusing procedure is proposed. The scattering equations are expressed within the contrast source formulation of the electromagnetic inverse problem and then solved by a nested procedure which includes an outer multi-resolution loop (dealing with the identification of the regions of interest), a spectrum analysis step (devoted to the reconstruction of the `deterministic' components of the contrast sources) and an inner optimization loop (aimed at the retrieval of their `ambiguous' parts). A numerical analysis is presented to preliminarily assess the features of the proposed approach.
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Titolo: | Enhancing subspace-based inversions through an efficient multi-scaling scheme |
Autori: | G.Oliveri; Y. Zhong; X. Chen; A. Massa |
Autori Unitn: | |
Titolo del volume contenente il saggio: | XXX URSI General Assembly and Scientific Symposium of International Union of Radio Science |
Luogo di edizione: | Piscataway, NJ |
Casa editrice: | IEEE |
Anno di pubblicazione: | 2011 |
Codice identificativo Scopus: | 2-s2.0-81255163092 |
ISBN: | 9781424451173 |
Handle: | http://hdl.handle.net/11572/89787 |
Appare nelle tipologie: | 04.1 Saggio in atti di convegno (Paper in proceedings) |