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Material response analysis of georadar reflection dataNormal access

Authors: J.T. Fokkema, E.C. Slob, E. Fokkema and S. Beekman
Issue: Vol 2, No 1, February 2004 pp. 41 - 47
DOI: 10.3997/1873-0604.2003015
Special Topic: Advanced Ground Penetrating Radar Technology
Language: English
Info: Article, PDF ( 779.58Kb )

Understanding the nature of the ground-penetrating radar (GPR) reflection response in terms of the dielectric permittivity and conductivity contrast is an important factor in interpretation. This is the reason for the present study, which aims to carry out an experiment in a controlled fashion, so that the relationship between measurements and the relevant physical parameters can be established. Accurate modelling of the subsurface parameter distribution is hampered by lack of both knowledge of the source signature and an appropriate model. We have therefore constructed a controlled environment in which to carry out measurements that can be modelled with sufficient accuracy in a 1D setting, under the constraint that subsurface conditions can be changed without disturbing the overburden. We present the results of such measurements, an analysis of the data and an interpretation based upon a 1D model, which is sufficiently realistic to accommodate sophisticated physical parameter models.

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