Title :
Full-vectorial three-dimensional microwave imaging through the iterative multiscaling strategy-a preliminary assessment
Author :
Franceschini, Gabriele ; Franceschini, Davide ; Massa, Andrea
Author_Institution :
Dept. of Inf. & Commun. Technol., Univ. of Trento, Italy
Abstract :
In this letter, a multiscaling strategy for full-vectorial three-dimensional inverse scattering problems is presented. The approach is fully iterative, and it avoids solving any forward problem at each step. Thanks to the adaptive multiresolution model, which offers considerable flexibility for the inclusion of the a priori knowledge and of the knowledge acquired during the iterative steps of the multiscaling process, the overall computational burden as well as the dimension of the search-space is considerably reduced. This allows to balance effectively the tradeoff between computational costs and achievable resolution accuracy. The effectiveness of the proposed approach is demonstrated through a selected set of preliminary experiments using homogeneous dielectric scatterers in a noisy synthetic environment.
Keywords :
geophysical techniques; inverse problems; microwave imaging; remote sensing; adaptive multiresolution model; computational costs; full-vectorial 3D microwave imaging; homogeneous dielectric scatterers; inverse scattering problems; iterative multiscaling strategy; resolution accuracy; search-space; Biomedical imaging; Dielectrics; Electromagnetic scattering; Image reconstruction; Inverse problems; Iterative methods; Microwave imaging; Radar scattering; Rayleigh scattering; Spatial resolution; Inverse scattering; iterative multiscaling method; microwave imaging; three-dimensional (3-D) geometry;
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2005.853200