relation: http://www.eledia.org/students-reports/742/ title: Innovative Alphabet‐Based Bayesian Compressive Sensing Technique for Imaging Targets with Arbitrary Shape creator: Anselmi, N. creator: Oliveri, G. creator: Hannan, M. creator: Salucci, M. creator: Massa, A. subject: A WC Next Generation Wireless Communications subject: M CS Compressive Sensing description: In this work an innovative two-dimensional (2D) microwave imaging technique exploiting Bayesian Compressive Sensing (BCS) and a wavelet-based alphabet for representing the problem unknowns is dealt with. The proposed approach is based on the generalization of the sparsity concept, extending the range of applicability of BCS-based inverse scattering (IS) techniques to objects with arbitrary shape and dimensions. A set of BCS reconstructions is performed considering different expansion bases in the alphabet, without the need for a-priori knowledge about the unknown scatterers. Then, the best reconstruction is recognized as that minimizing the number of non-null retrieved coefficients (i.e., the sparsest one). In order to verify the effectiveness of the proposed imaging technique, a set of representative numerical benchmarks is presented. Some comparisons with state-of-the-art IS techniques are presented, as well. publisher: ELEDIA Research Center - University of Trento date: 2017 type: Monograph type: NonPeerReviewed format: text language: en identifier: http://www.eledia.org/students-reports/742/1/Innovative_Alphabet%E2%80%90Based_Bayesian_Compressive_Sensing_Technique_for_Imaging_Targets_with_Arbitrary_Shape.v2.pdf identifier: Anselmi, N. and Oliveri, G. and Hannan, M. and Salucci, M. and Massa, A. (2017) Innovative Alphabet‐Based Bayesian Compressive Sensing Technique for Imaging Targets with Arbitrary Shape. Technical Report. ELEDIA Research Center - University of Trento.