A finite-difference time-domain simulation tool for ground-penetrating radar antennas

Détails

ID Serval
serval:BIB_FD912D57137F
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
A finite-difference time-domain simulation tool for ground-penetrating radar antennas
Périodique
Geophysics
Auteur(s)
Lampe B., Holliger K., Green A.
ISSN-L
0016-8033
Statut éditorial
Publié
Date de publication
2003
Peer-reviewed
Oui
Volume
68
Pages
971-987
Langue
anglais
Résumé
The generation and recording of electromagnetic waves by typical ground-penetrating
radar (GPR) systems are complex phenomena. To investigate the characteristics
of typical GPR antennas operating in diverse environments, we have
developed a versatile and efficient simulation tool. It is based
on a finite-difference time-domain (FDTD) approximation of Maxwell's
equations that lets one simulate the radiation characteristics of
a wide variety of typical surface GPR antenna systems. The accuracy
of the algorithm is benchmarked and validated with respect to laboratory
measurements for comparable antenna systems. Computed radiation patterns
demonstrate that the illumination of the subsurface in the near-to
intermediate-field range varies significantly according to how the
antenna is designed. Our models show the effects of varying the shapes
of the antennas, adding shielding (metal box with and without absorbing
material and with and without resistive loading), adding a receiver
antenna, and changing the soil conditions. Given the flexibility
of this modeling software, we anticipate that it will be helpful
in designing GPR surveys and new GPR systems with arbitrary planar
structures. It will also be useful in interpreting certain GPR data
sets.
Mots-clé
PERFECTLY MATCHED LAYER, ELECTROMAGNETIC-WAVES, MAXWELLS EQUATIONS, HALF-SPACE, FDTD, ABSORPTION, MEDIA, TRANSMISSION, PROPAGATION, RADIATION
Création de la notice
25/11/2013 18:27
Dernière modification de la notice
20/08/2019 16:28
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