%T An Iterative Bayesian Compressive Sensing Approach for reconstructing Non-Born Scatterer %I ELEDIA Research Center - University of Trento %L elediasc12915 %D 2025 %A Marco SALUCCI %A Lorenzo POLI %A Francesco ZARDI %A Luca TOSI %A Samantha LUSA %A Andrea MASSA %X This study presents an advanced multi-step inverse scattering method, developed within the contrast source inversion (CSI) framework, to reconstruct non-Born scatterers. The technique utilizes a multi-resolution (MR) model to represent the contrast sources, which are progressively estimated using a Bayesian compressive sensing (BCS) strategy with sparsity constraints. The proposed MR-BCS-CSI method is thoroughly tested using simulated data to validate its precision and stability. Comparative evaluations against current state-of-the-art techniques reveal the method’s strong performance and reliability. %K microwave imaging (MI), contrast source inversion (CSI), Bayesian compressive sensing (BCS), inverse scattering (IS)