## Accurate and efficient FDTD modeling of ground-penetrating radar antenna radiation

### Détails

ID Serval

serval:BIB_4DBAA11209C1

Type

**Article**: article d'un périodique ou d'un magazine.

Collection

Publications

Fonds

Titre

Accurate and efficient FDTD modeling of ground-penetrating radar antenna radiation

Périodique

Geophysical Research Letters

ISSN-L

0094-8276

Statut éditorial

Publié

Date de publication

1998

Peer-reviewed

Oui

Volume

25

Pages

3883-3886

Langue

anglais

Résumé

We present a 3-D finite-difference time domain (FDTD) solution of

Maxwell's equations for modeling the near-field radiation of dipole

antennas in ground-penetrating radar surveys. The antenna is represented

as a conducting wire with a narrow gap in the middle. The electromagnetic

field in the immediate vicinity of the wire is evaluated by numerical

solution of an integral representation of Maxwell's equations. Integration

contours and surfaces are defined by the finite-difference cells

surrounding the wire. Everywhere else the electromagnetic wavefield

is calculated using conventional FDTD approximations of Maxwell's

equations. The accuracy of the algorithm has been tested by comparing

the simulated near-field radiation of a dipole antenna between two

dielectric media with corresponding experimental observations.

Maxwell's equations for modeling the near-field radiation of dipole

antennas in ground-penetrating radar surveys. The antenna is represented

as a conducting wire with a narrow gap in the middle. The electromagnetic

field in the immediate vicinity of the wire is evaluated by numerical

solution of an integral representation of Maxwell's equations. Integration

contours and surfaces are defined by the finite-difference cells

surrounding the wire. Everywhere else the electromagnetic wavefield

is calculated using conventional FDTD approximations of Maxwell's

equations. The accuracy of the algorithm has been tested by comparing

the simulated near-field radiation of a dipole antenna between two

dielectric media with corresponding experimental observations.

Création de la notice

25/11/2013 19:27

Dernière modification de la notice

18/11/2016 14:27