A comparative investigation of the pavement layer dielectrics by FDTD modelling and reflection amplitude GPR data

Fabio Tosti; Amir M. Alani; Andrea Benedetto; Luca Bianchini Ciampoli; Maria Giulia Brancadoro; Lara Pajewski

doi:10.1201/9781315100333-205

A comparative investigation of the pavement layer dielectrics by FDTD modelling and reflection amplitude GPR data

Fabio Tosti, Amir M. Alani, Andrea Benedetto, Luca Bianchini Ciampoli, Maria Giulia Brancadoro, Lara Pajewski

Faculty of Engineering, Computing & the Environment

Research output: Contribution to conference › Paper › peer-review

Abstract

The present work focuses on the application of the ground-penetrating radar (GPR) technique on a flexible pavement structure for the assessment of the layer dielectrics. Two air-coupled GPR systems, with antennas operating at 1 GHz and 2 GHz central frequencies have been used for testing and simulation purposes. The ef-fectiveness of the combination of i) the Finite-Difference Time-Domain (FDTD) technique for the simulation of the GPR signal, and ii) the GPR reflection amplitude technique, for the estimation of the dielectrics of the pavement layers, has been analyzed. Three steps of processing are proposed and the results are compared each to one another. In the first stage, the signal has been simulated using design project data for the cross-section investigated and dielectric permittivity values for the (design) construction materials, derived from the litera-ture. In the second stage, the dielectrics have been computed by the signal collected within a real-life flexible pavement. Both the two-way travel time and the reflection amplitude techniques were performed. The third step was focused on analyzing the accuracy of the reflection amplitude method combined with the optimized simulation of the GPR signal. The results demonstrate potential on the use of the proposed approach with re-spect to the application of the reflection amplitude technique to the real-life GPR signal.

Original language	English
DOIs	https://doi.org/10.1201/9781315100333-205
Publication status	Published - Jun 2017
Event	Tenth International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017) - Athens, Greece Duration: 28 Jun 2017 → 30 Jun 2017

Conference

Conference	Tenth International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017)
Period	28/06/17 → 30/06/17

Bibliographical note

Note: Published in: Loizos, A., Al-Qadi, I.L. and Scarpas, A. (eds.) (2017) Bearing Capacity of Roads, Railways and Airfields : Proceedings of the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017), June 28-30, 2017, Athens, Greece. London, U.K. : CRC Press. pp. 1545-1552. ISBN 9781138295957.

Keywords

Ground-penetraring radar
finite-difference time-domain (FDTD) simulation
highway inspection
roads
Civil engineering

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10.1201/9781315100333-205

http://dx.doi.org/10.1201/9781315100333-205

Cite this

Tosti, F., Alani, A. M., Benedetto, A., Ciampoli, L. B., Brancadoro, M. G., & Pajewski, L. (2017). A comparative investigation of the pavement layer dielectrics by FDTD modelling and reflection amplitude GPR data. Paper presented at Tenth International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017). https://doi.org/10.1201/9781315100333-205

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title = "A comparative investigation of the pavement layer dielectrics by FDTD modelling and reflection amplitude GPR data",

abstract = "The present work focuses on the application of the ground-penetrating radar (GPR) technique on a flexible pavement structure for the assessment of the layer dielectrics. Two air-coupled GPR systems, with antennas operating at 1 GHz and 2 GHz central frequencies have been used for testing and simulation purposes. The ef-fectiveness of the combination of i) the Finite-Difference Time-Domain (FDTD) technique for the simulation of the GPR signal, and ii) the GPR reflection amplitude technique, for the estimation of the dielectrics of the pavement layers, has been analyzed. Three steps of processing are proposed and the results are compared each to one another. In the first stage, the signal has been simulated using design project data for the cross-section investigated and dielectric permittivity values for the (design) construction materials, derived from the litera-ture. In the second stage, the dielectrics have been computed by the signal collected within a real-life flexible pavement. Both the two-way travel time and the reflection amplitude techniques were performed. The third step was focused on analyzing the accuracy of the reflection amplitude method combined with the optimized simulation of the GPR signal. The results demonstrate potential on the use of the proposed approach with re-spect to the application of the reflection amplitude technique to the real-life GPR signal.",

keywords = "Ground-penetraring radar, finite-difference time-domain (FDTD) simulation, highway inspection, roads, Civil engineering",

author = "Fabio Tosti and Alani, \{Amir M.\} and Andrea Benedetto and Ciampoli, \{Luca Bianchini\} and Brancadoro, \{Maria Giulia\} and Lara Pajewski",

note = "Note: Published in: Loizos, A., Al-Qadi, I.L. and Scarpas, A. (eds.) (2017) Bearing Capacity of Roads, Railways and Airfields : Proceedings of the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017), June 28-30, 2017, Athens, Greece. London, U.K. : CRC Press. pp. 1545-1552. ISBN 9781138295957.; Tenth International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017) ; Conference date: 28-06-2017 Through 30-06-2017",

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Tosti, F, Alani, AM, Benedetto, A, Ciampoli, LB, Brancadoro, MG & Pajewski, L 2017, 'A comparative investigation of the pavement layer dielectrics by FDTD modelling and reflection amplitude GPR data', Paper presented at Tenth International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017), 28/06/17 - 30/06/17. https://doi.org/10.1201/9781315100333-205

TY - CONF

T1 - A comparative investigation of the pavement layer dielectrics by FDTD modelling and reflection amplitude GPR data

AU - Tosti, Fabio

AU - Alani, Amir M.

AU - Benedetto, Andrea

AU - Ciampoli, Luca Bianchini

AU - Brancadoro, Maria Giulia

AU - Pajewski, Lara

N1 - Note: Published in: Loizos, A., Al-Qadi, I.L. and Scarpas, A. (eds.) (2017) Bearing Capacity of Roads, Railways and Airfields : Proceedings of the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017), June 28-30, 2017, Athens, Greece. London, U.K. : CRC Press. pp. 1545-1552. ISBN 9781138295957.

PY - 2017/6

Y1 - 2017/6

N2 - The present work focuses on the application of the ground-penetrating radar (GPR) technique on a flexible pavement structure for the assessment of the layer dielectrics. Two air-coupled GPR systems, with antennas operating at 1 GHz and 2 GHz central frequencies have been used for testing and simulation purposes. The ef-fectiveness of the combination of i) the Finite-Difference Time-Domain (FDTD) technique for the simulation of the GPR signal, and ii) the GPR reflection amplitude technique, for the estimation of the dielectrics of the pavement layers, has been analyzed. Three steps of processing are proposed and the results are compared each to one another. In the first stage, the signal has been simulated using design project data for the cross-section investigated and dielectric permittivity values for the (design) construction materials, derived from the litera-ture. In the second stage, the dielectrics have been computed by the signal collected within a real-life flexible pavement. Both the two-way travel time and the reflection amplitude techniques were performed. The third step was focused on analyzing the accuracy of the reflection amplitude method combined with the optimized simulation of the GPR signal. The results demonstrate potential on the use of the proposed approach with re-spect to the application of the reflection amplitude technique to the real-life GPR signal.

AB - The present work focuses on the application of the ground-penetrating radar (GPR) technique on a flexible pavement structure for the assessment of the layer dielectrics. Two air-coupled GPR systems, with antennas operating at 1 GHz and 2 GHz central frequencies have been used for testing and simulation purposes. The ef-fectiveness of the combination of i) the Finite-Difference Time-Domain (FDTD) technique for the simulation of the GPR signal, and ii) the GPR reflection amplitude technique, for the estimation of the dielectrics of the pavement layers, has been analyzed. Three steps of processing are proposed and the results are compared each to one another. In the first stage, the signal has been simulated using design project data for the cross-section investigated and dielectric permittivity values for the (design) construction materials, derived from the litera-ture. In the second stage, the dielectrics have been computed by the signal collected within a real-life flexible pavement. Both the two-way travel time and the reflection amplitude techniques were performed. The third step was focused on analyzing the accuracy of the reflection amplitude method combined with the optimized simulation of the GPR signal. The results demonstrate potential on the use of the proposed approach with re-spect to the application of the reflection amplitude technique to the real-life GPR signal.

KW - Ground-penetraring radar

KW - finite-difference time-domain (FDTD) simulation

KW - highway inspection

KW - roads

KW - Civil engineering

UR - http://repository.uwl.ac.uk/id/eprint/3069/

U2 - 10.1201/9781315100333-205

DO - 10.1201/9781315100333-205

M3 - Paper

T2 - Tenth International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017)

Y2 - 28 June 2017 through 30 June 2017

ER -

A comparative investigation of the pavement layer dielectrics by FDTD modelling and reflection amplitude GPR data

Abstract

Conference

Bibliographical note

Keywords

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A comparative investigation of the pavement layer dielectrics by FDTD modelling and reflection amplitude GPR data

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