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International Journal of Antennas and Propagation
Volume 2016 (2016), Article ID 9304371, 8 pages
Research Article

A Banach Space Regularization Approach for Multifrequency Microwave Imaging

1Department of Mathematics, University of Genoa, Via Dodecaneso 35, 16146 Genova, Italy
2Department of Electrical, Electronic, Telecommunications Engineering, and Naval Architecture, University of Genoa, Via Opera Pia 11A, 16145 Genova, Italy

Received 15 October 2015; Accepted 24 February 2016

Academic Editor: Ahmed T. Mobashsher

Copyright © 2016 Claudio Estatico et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A method for microwave imaging of dielectric targets is proposed. It is based on a tomographic approach in which the field scattered by an unknown target (and collected in a proper observation domain) is inverted by using an inexact-Newton method developed in Banach spaces. In particular, the extension of the approach to multifrequency data processing is reported. The mathematical formulation of the new method is described and the results of numerical simulations are reported and discussed, analyzing the behavior of the multifrequency processing technique combined with the Banach spaces reconstruction method.