eprintid: 740 rev_number: 9 eprint_status: archive userid: 7 dir: disk0/00/00/07/40 datestamp: 2017-07-14 11:17:21 lastmod: 2018-02-26 13:54:03 status_changed: 2017-07-14 11:17:21 type: monograph metadata_visibility: show creators_name: Salucci, M. creators_name: Poli, L. creators_name: Anselmi, N. creators_name: Massa, A. title: An Evolutionary Optimization Method for Solving the Multi-Frequency GPR Subsurface Problem ispublished: pub subjects: AWC subjects: MEA full_text_status: public monograph_type: technical_report keywords: Ground Penetrating Radar (GPR), Inverse Scattering (IS), Multi-Frequency (MF), Particle Swarm Optimization (PSO), Stochastic Optimization, Wide-band Data, Iterative Multi Scaling Approach (IMSA) abstract: In this work, the two-dimensional subsurface imaging problem is solved by processing wide-band ground penetrating radar (GPR) data. Towards this end, an innovative microwave inverse scattering technique is presented. The developed methodology is based on a particle swarm optimization (PSO) solver to minimize the arising multi-frequency (MF) cost function measuring the mismatch between measured and retrieved data. Moreover, an iterative multi-resolution strategy is exploited in order to progressively and adaptively refine the resolution of the retrieved images only within the regions of interest in which the presence of a buried object has been detected. Some numerical results are shown, in order to assess the effectiveness of the developed MF-IMSA-PSO strategy in reconstructing dielectric objects buried at different depths. Some experiments are also shown to verify the robustness of the proposed method when the background permittivity is not constant but smoothly varying with the distance from the interface. date: 2017 publisher: ELEDIA Research Center - University of Trento referencetext: P. Rocca, M. Benedetti, M. Donelli, D. Franceschini, and A. 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Massa, “Three-dimensional microwave imaging problems solved through an efficient multiscaling particle swarm optimization,” IEEE Trans. Geosci. Remote Sensing, vol. 47, no. 5, pp. 1467-1481, May 2009. citation: Salucci, M. and Poli, L. and Anselmi, N. and Massa, A. (2017) An Evolutionary Optimization Method for Solving the Multi-Frequency GPR Subsurface Problem. Technical Report. ELEDIA Research Center - University of Trento. document_url: http://www.eledia.org/students-reports/740/1/An%20Evolutionary%20Optimization%20Method%20for%20Solving%20the%20Multi-Frequency%20GPR%20Subsurface%20Problem.pdf