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WORKSHOPS (4 December 2021)
The following two half-day workshop offer the opportunity to learn about the modelling and simulation of Ground Penetrating Radar (GPR) using gprMax. The workshops will be given by Dr Antonis Giannopoulos (University of Edinburgh, UK), Dr Craig Warren (Northumbria University, UK), and Dr Iraklis Giannakis (University of Aberdeen, UK). Attendees can choose to do both workshops one after the other, or if they are already familiar with GPR modelling and gprMax, they can elect to do the more advanced workshop only.

An introduction to Ground Penetrating Radar modelling and gprMax

Antonis Giannopoulos1 , Craig Warren2 , Iraklis Giannakis3

1: University of Edinburgh, UK
2: Northumbria University, UK
3: University of Aberdeen, UK


This workshop is intended as an introduction to basic electromagnetic wave propagation theory, the finite-difference time-domain (FDTD) numerical method, and the principles of modelling Ground Penetrating Radar (GPR). gprMax (http://www.gprmax.com) will be used to demonstrate how to create a first simple GPR model, during which the design and functionality of the software will be explained. The workshop is aimed at people with little or no experience of these topics. Attendees can bring their own laptop with gprMax already installed, so that they can follow along with example models if they wish.


Advanced concepts for Ground Penetrating Radar simulations using gprMax

Antonis Giannopoulos1, Iraklis Giannakis2, Craig Warren3

1: University of Edinburgh, UK
2: University of Aberdeen, UK
3: Northumbria University, UK


This workshop will present a number of advanced modelling tools that are available in the latest version of gprMax for modelling GPR as well as other electromagnetic phenomena. Such features can include dispersive and heterogenous material models, antenna models, sub-gridding, and the use of gprMax within artificial intelligence and full waveform inversion frameworks. The workshop is aimed at people with are already familiar with electromagnetic modelling and the underlying theory, and who have previously used gprMax. Attendees can bring their own laptop with gprMax already installed, so that they can follow along with example models if they wish.


GPR-SLICE Software Workshop

Gianluca Catanzariti1, Guido Tronca2

1: 3DGEOIMAGING, Turin, Italy
2: GT Studio Service, Turin, Italy


The workshop will include two sessions, a first one introducing the main features of GPR-SLICE software, including data filtering, generation of 2D time slices from closely spaced radar profiles, solid volumes creation from single- and multi-channel dataset, GPS/TS navigation, noise corrections, topographic adjustment, and a second one focused on the use of GPR-SLICE for structural applications. The latter addresses all technicians and professionals involved in the use of structural high frequency GPR in the fields of Civil Engineering and Cultural Heritage. Typical applications such as hit-prevention, quality control and decay assessment can successfully be addressed by means of specific features supported by GPR-Slice. Key topics will be the use of OpenGL environment for representing structural details, vector imaging for 3D analysis of non-flat surfaces, automatic peaking of longitudinal and parallel reflectors, concrete cover maps and corrosion analysis. The whole event will be held with a strong practice-driven approach, discussing all applications by means of explicative real-life cases.


TUTORIAL (4 December 2021)
From the Maxwell equations to the migration formulas in frequency and time domain

Raffaele Persico1

1: University of Calabria, Italy


This tutorial will provide a physical-mathematical explanation of the subsequent steps that allow to retrieve the classical 2D migration formulas in frequency and time domain (Stolt’s and Kirchhoff’s migration formulas) starting from the Maxwell equations. The dealing will also provide and insight about the intrinsic resolution limits and the needed sampling rates of the data in GPR prospecting, as well as an insight about the mathematical properties of the relevant mathematical operators as well as about the approximations underlying the migration formulas and their main practical effects.