%0 Report %9 Technical Report %A SALUCCI, Marco %A POLI, Lorenzo %A ZARDI, Francesco %A TOSI, Luca %A LUSA, Samantha %A MASSA, Andrea %D 2025 %F elediasc12:916 %K microwave imaging (MI), contrast source inversion (CSI), Bayesian compressive sensing (BCS), inverse scattering (IS) %T Contrast Source Inversion of Non-Born Scatterers with Multi-Resolution Bayesian Learning %U http://www.eledia.org/students-reports/916/ %X This report introduces an advanced multi-step inverse scattering method within the contrast source inversion (CSI) framework to reconstruct non-Born scatterers. The approach employs a multi-resolution (MR) representation to flexibly model the unknown contrast sources, which are iteratively estimated using a Bayesian compressive sensing (BCS) technique. The proposed MR-BCS-CSI method is rigorously evaluated through different case studies, demonstrating high accuracy, stability, and robustness. A comparative analyses is performed to further highlight its effectivenes.