Realistic modeling of borehole georadar antenna radiation

Détails

ID Serval
serval:BIB_907788A6D7C4
Type
Actes de conférence (partie): contribution originale à la littérature scientifique, publiée à l'occasion de conférences scientifiques, dans un ouvrage de compte-rendu (proceedings), ou dans l'édition spéciale d'un journal reconnu (conference proceedings).
Collection
Publications
Titre
Realistic modeling of borehole georadar antenna radiation
Titre de la conférence
73rd SEG Annual Meeting, Dallas, Texas
Auteur(s)
Ernst J., Holliger K., Maurer H.R.
Editeur
Society of Exploration Geophysicists
ISSN-L
1052-3812
Statut éditorial
Publié
Date de publication
2003
Pages
NSG 1.2
Langue
anglais
Résumé
High-frequency electromagnetic wave propagation phenomena associated
with borehole georadar experiments are complex. To improve our understanding
of the governing physical processes, we present a suitable finitedifference
time-domain (FDTD) solution of Maxwell's equations in cylindrical
coordinates. An important feature of this algorithm is the use of
a powerful grid refinement technique that enables us to account efficiently
for detailed design aspects of georadar antennas as well as materials
with very high dielectric permittivities. This type of modeling provides
the basis for improving the ray-based inversion of the first-cycle
amplitudes and/or for performing the full-waveform inversion of crosshole
georadar data. We first validate the accuracy of the algorithm with
respect to the solutions for an infinitesimal electric dipole source
as well as a wire-type dipole antenna and then apply it to explore
the radiative properties of realistic antenna designs used in borehole
georadar.
Création de la notice
25/11/2013 19:28
Dernière modification de la notice
03/03/2018 19:25
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