%T Contrast Source Inversion Using Iterative Multi-Scaling BCS %I ELEDIA Research Center - University of Trento %L elediasc12913 %D 2025 %A Marco SALUCCI %A Lorenzo POLI %A Francesco ZARDI %A Luca TOSI %A Samantha LUSA %A Andrea MASSA %X A new multi-resolution (MR) inverse scattering strategy is developed within the contrast source inversion (CSI) framework to retrieve non-Born scatterers. The unknown contrast sources are iteratively reconstructed through a Bayesian compressive sensing (BCS) technique. The proposed MR-BCS-CSI approach is evaluated using synthetic data, demonstrating its accuracy and robustness. Comparative analyses with recent state-of-the-art methods further underscore the effectiveness and competitiveness of the approach. %K microwave imaging (MI), contrast source inversion (CSI), Bayesian compressive sensing (BCS), inverse scattering (IS)