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).

A comparative assessment of information-exploitation techniques for GPR data inversion / Salucci, M.; Tenuti, L.; Poli, Lorenzo; Oliveri, G.; Massa, Andrea. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - STAMPA. - 657:(2015), pp. 012010.1-012010.6. ((Intervento presentato al convegno 5th International Workshop on New Computational Methods for Inverse Problems, NCMIP 2015 tenutosi a Chacan, FRA nel 29th May 2015 [10.1088/1742-6596/657/1/012010].

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

Salucci, M.;Tenuti, L.;Poli, Lorenzo;Oliveri, G.;Massa, Andrea
2015

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).
5th International Workshop on New Computational Methods for Inverse Problems, NCMIP 2015
Bristol
Institute of Physics Publishing
Salucci, M.; Tenuti, L.; Poli, Lorenzo; Oliveri, G.; Massa, Andrea
A comparative assessment of information-exploitation techniques for GPR data inversion / Salucci, M.; Tenuti, L.; Poli, Lorenzo; Oliveri, G.; Massa, Andrea. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - STAMPA. - 657:(2015), pp. 012010.1-012010.6. ((Intervento presentato al convegno 5th International Workshop on New Computational Methods for Inverse Problems, NCMIP 2015 tenutosi a Chacan, FRA nel 29th May 2015 [10.1088/1742-6596/657/1/012010].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11572/156264
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