%0 Report
%9 Technical Report
%A Salucci, M.
%A Poli, L.
%A Massa, A.
%D 2016
%F elediasc12:730
%K Ground Penetrating Radar (GPR), Inverse Scattering (IS), Multi-Frequency, Conjugate Gradient, Deterministic Approaches, Wide-band Data  
%T Microwave Imaging of Buried Targets through a Multi-Zooming Approach: Reconstruction Capabilities for Different Object Conductivities
%U http://www.eledia.org/students-reports/730/
%X In this work, the performance of an innovative microwave imaging methodology for buried object detection are analyzed. More precisely, the developed inverse scattering (IS) approach is based on a Multi-Frequency (MF) formulation of the buried IS equations in order to exploit the frequency diversity coming from wideband ground penetrating radar (GPR) measurements. The arising MF cost function is minimized through a customized deterministic solver based on a conjugate gradient (CG) minimizer nested within the iterative multi-scaling approach (IMSA) for achieving higher resolutions in the identified regions of interest (RoIs). Some illustrative numerical results are shown, in order to verify the effectiveness of the developed MF-IMSA-CG methodology when dealing with the retrieval of buried objects having different values of electric conductivity. For completeness, as well as for the sake of comparison, the reconstructions yielded by a competitive state-of-the-art approach based on a frequency hopping (FH) processing of the GPR spectrum are also shown, by considering several noise conditions.