@techreport{elediasc12912, title = {Enhanced Contrast Source Inversion Using Multi-Resolution BCS}, year = {2025}, author = {Marco SALUCCI and Lorenzo POLI and Francesco ZARDI and Luca TOSI and Samantha LUSA and Andrea MASSA}, type = {Technical Report}, publisher = {ELEDIA Research Center - University of Trento}, keywords = {microwave imaging (MI), contrast source inversion (CSI), Bayesian compressive sensing (BCS), inverse scattering (IS)}, url = {http://www.eledia.org/students-reports/912/}, abstract = {A novel multi-step inverse scattering technique is introduced within the contrast source inversion (CSI) framework to recover non-Born scatterers. This approach leverages a multi-resolution (MR) representation to characterize contrast sources, which are progressively reconstructed using a Bayesian compressive sensing (BCS) method. The effectiveness and stability of the proposed MR-BCS-CSI strategy are demonstrated through numerical case studies. Furthermore, comparisons with cutting-edge methodologies highlight its competitive performance.} }