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

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)
1 Downloads (Pure)

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 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 languageEnglish
Publication statusPublished - 2 Jun 2016
EventEuCAP 2016 - 10th European Conference on Antennas and Propagation - Davos, Switzerland
Duration: 2 Jun 2016 → …

Conference

ConferenceEuCAP 2016 - 10th European Conference on Antennas and Propagation
Period2/06/16 → …

Fingerprint Dive into the research topics of 'An evaluation of Finite-Difference and Finite-Integration Time-Domain modelling tools for Ground Penetrating Radar antennas'. Together they form a unique fingerprint.

Cite this