A comparative assessment of information-exploitation techniques for GPR data inversion

Abstract : The inversion of Ground Penetrating Radar (GPR) data requires the development of suitable information-exploitation techniques that are able to extract as much as possible information on the unknown targets from the available measurements. An innovative singlefrequency (SF) inversion technique based on a deterministic conjugate-gradient (CG) minimization and the iterative multi-scaling approach (IMSA) is described. It is then shown how to improve the performances of the SF-IMSA-CG method by the introduction of an external frequency hopping (FH) iterative loop. On the one hand, the proposed FH-IMSA-CG method allows to exploit the intrinsic frequency diversity of wideband GPR measurements thanks to the FH strategy. On the other hand, the IMSA approach guarantees a significant reduction of the problem unknowns, providing an increased resolution within the identified regions of interest (RoIs). A numerical comparison shows the advantages of the FH-IMSA-CG over its single-frequency version. Moreover, the benefits of integrating the IMSA within the FH are verified by directly comparing the FH-IMSA-CG with its single-resolution (BARE) version (FH-BARE-CG).
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Contributor : Andrea Massa <>
Submitted on : Friday, January 29, 2016 - 4:22:34 PM
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Marco Salucci, Lorenza Tenuti, Lorenzo Poli, Giacomo Oliveri, Andrea Massa. A comparative assessment of information-exploitation techniques for GPR data inversion. 5th International Workshop on New Computational Methods for Inverse Problems (NCMIP 2015), May 2015, Chachan, France. ⟨10.1088/1742-6596/657/1/012010⟩. ⟨hal-01264761⟩



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