An evaluation of Finite-Difference and Finite-Integration Time-Domain modelling tools for Ground Penetrating Radar antennas

Craig Warren; Lara Pajewski; Alessio Ventura; Antonios Giannopoulos

doi:10.1109/EuCAP.2016.7482010

An evaluation of Finite-Difference and Finite-Integration Time-Domain modelling tools for Ground Penetrating Radar antennas

Craig Warren, Lara Pajewski, Alessio Ventura, Antonios Giannopoulos

School of Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract / Description of output

The development of accurate and realistic models of Ground Penetrating Radar (GPR) antennas is being driven by research into quantitative amplitude information from GPR, improved GPR antenna designs, and better-performing forward simulations that can feed into inversion algorithms. The Finite-Difference Time-Domain (FDTD) method and Finite-Integration technique (FIT) are popular numerical methods for simulating electromagnetic wave propagation. Time-Domain methods are particularly well-suited to modelling ultra-wideband GPR antennas as a broad range of frequencies can be modelled with a single simulation. We present comparisons using experimental and simulated data from a Geophysical Survey Systems 1.5 GHz antenna and a MALÅ Geoscience 1.2 GHz antenna. The antennas were investigated in free space and over a lossy dielectric environment with a target. For the simulations we used a commercial solver - Computer Simulation Technology Microwave Studio (CST) - and a free open-source FDTD solver - gprMax. For each test scenario, phase and amplitude information from the antenna responses were compared. Generally, we found very good agreement between the experimental data and the two simulations.

Original language	English
Title of host publication	2016 10th European Conference on Antennas and Propagation, EuCAP 2016
Publisher	Institute of Electrical and Electronics Engineers
ISBN (Electronic)	9788890701863
DOIs	https://doi.org/10.1109/EuCAP.2016.7482010
Publication status	Published - 31 May 2016
Event	10th European Conference on Antennas and Propagation, EuCAP 2016 - Davos, Switzerland Duration: 10 Apr 2016 → 15 Apr 2016

Conference

Conference	10th European Conference on Antennas and Propagation, EuCAP 2016
Country/Territory	Switzerland
City	Davos
Period	10/04/16 → 15/04/16

Keywords / Materials (for Non-textual outputs)

antenna
Finite-Difference Time-Domain
Ground Penetrating Radar
simulation

Access to Document

10.1109/EuCAP.2016.7482010

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Warren, C., Pajewski, L., Ventura, A., & Giannopoulos, A. (2016). An evaluation of Finite-Difference and Finite-Integration Time-Domain modelling tools for Ground Penetrating Radar antennas. In 2016 10th European Conference on Antennas and Propagation, EuCAP 2016 Article 7482010 Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/EuCAP.2016.7482010

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title = "An evaluation of Finite-Difference and Finite-Integration Time-Domain modelling tools for Ground Penetrating Radar antennas",

abstract = "The development of accurate and realistic models of Ground Penetrating Radar (GPR) antennas is being driven by research into quantitative amplitude information from GPR, improved GPR antenna designs, and better-performing forward simulations that can feed into inversion algorithms. The Finite-Difference Time-Domain (FDTD) method and Finite-Integration technique (FIT) are popular numerical methods for simulating electromagnetic wave propagation. Time-Domain methods are particularly well-suited to modelling ultra-wideband GPR antennas as a broad range of frequencies can be modelled with a single simulation. We present comparisons using experimental and simulated data from a Geophysical Survey Systems 1.5 GHz antenna and a MAL{\AA} Geoscience 1.2 GHz antenna. The antennas were investigated in free space and over a lossy dielectric environment with a target. For the simulations we used a commercial solver - Computer Simulation Technology Microwave Studio (CST) - and a free open-source FDTD solver - gprMax. For each test scenario, phase and amplitude information from the antenna responses were compared. Generally, we found very good agreement between the experimental data and the two simulations.",

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author = "Craig Warren and Lara Pajewski and Alessio Ventura and Antonios Giannopoulos",

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Warren, C, Pajewski, L, Ventura, A & Giannopoulos, A 2016, An evaluation of Finite-Difference and Finite-Integration Time-Domain modelling tools for Ground Penetrating Radar antennas. in 2016 10th European Conference on Antennas and Propagation, EuCAP 2016., 7482010, Institute of Electrical and Electronics Engineers, 10th European Conference on Antennas and Propagation, EuCAP 2016, Davos, Switzerland, 10/04/16. https://doi.org/10.1109/EuCAP.2016.7482010

An evaluation of Finite-Difference and Finite-Integration Time-Domain modelling tools for Ground Penetrating Radar antennas. / Warren, Craig; Pajewski, Lara; Ventura, Alessio et al.
2016 10th European Conference on Antennas and Propagation, EuCAP 2016. Institute of Electrical and Electronics Engineers, 2016. 7482010.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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PY - 2016/5/31

Y1 - 2016/5/31

N2 - The development of accurate and realistic models of Ground Penetrating Radar (GPR) antennas is being driven by research into quantitative amplitude information from GPR, improved GPR antenna designs, and better-performing forward simulations that can feed into inversion algorithms. The Finite-Difference Time-Domain (FDTD) method and Finite-Integration technique (FIT) are popular numerical methods for simulating electromagnetic wave propagation. Time-Domain methods are particularly well-suited to modelling ultra-wideband GPR antennas as a broad range of frequencies can be modelled with a single simulation. We present comparisons using experimental and simulated data from a Geophysical Survey Systems 1.5 GHz antenna and a MALÅ Geoscience 1.2 GHz antenna. The antennas were investigated in free space and over a lossy dielectric environment with a target. For the simulations we used a commercial solver - Computer Simulation Technology Microwave Studio (CST) - and a free open-source FDTD solver - gprMax. For each test scenario, phase and amplitude information from the antenna responses were compared. Generally, we found very good agreement between the experimental data and the two simulations.

AB - The development of accurate and realistic models of Ground Penetrating Radar (GPR) antennas is being driven by research into quantitative amplitude information from GPR, improved GPR antenna designs, and better-performing forward simulations that can feed into inversion algorithms. The Finite-Difference Time-Domain (FDTD) method and Finite-Integration technique (FIT) are popular numerical methods for simulating electromagnetic wave propagation. Time-Domain methods are particularly well-suited to modelling ultra-wideband GPR antennas as a broad range of frequencies can be modelled with a single simulation. We present comparisons using experimental and simulated data from a Geophysical Survey Systems 1.5 GHz antenna and a MALÅ Geoscience 1.2 GHz antenna. The antennas were investigated in free space and over a lossy dielectric environment with a target. For the simulations we used a commercial solver - Computer Simulation Technology Microwave Studio (CST) - and a free open-source FDTD solver - gprMax. For each test scenario, phase and amplitude information from the antenna responses were compared. Generally, we found very good agreement between the experimental data and the two simulations.

KW - antenna

KW - Finite-Difference Time-Domain

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PB - Institute of Electrical and Electronics Engineers

T2 - 10th European Conference on Antennas and Propagation, EuCAP 2016

Y2 - 10 April 2016 through 15 April 2016

ER -

An evaluation of Finite-Difference and Finite-Integration Time-Domain modelling tools for Ground Penetrating Radar antennas

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Keywords / Materials (for Non-textual outputs)

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