Quantifying GPR transient waveforms in the intermediate zone

Author

Diamanti, N. ; Annan, Peter ; Redman, D.

Author_Institution

Dept. of Geophys., Aristotle Univ. of Thessaloniki, Thessaloniki, Greece

fYear

2013

fDate

2-5 July 2013

Firstpage

1

Lastpage

7

Abstract

In this paper we examine the transient electromagnetic field variation around dipole antennas placed on the surface of a half-space. To achieve this we employ three-dimensional (3D) finite-difference time-domain (FDTD) numerical modelling. We have previously shown how antenna height, shielding and ground properties impact the directionality and energy flow. Here, we report how the transient fields around a dipole change their amplitude, shape and frequency content. Further, we demonstrate how the aforementioned attributes change as we move away from the source.

Keywords

dipole antennas; electromagnetic shielding; finite difference time-domain analysis; ground penetrating radar; radar antennas; 3D FDTD; GPR transient waveform; dipole antenna; energy flow; ground property; half-space surface; intermediate zone; shielding property; three-dimensional finite-difference time-domain numerical modelling; transient electromagnetic field variation; Dipole antennas; Finite difference methods; Ground penetrating radar; Numerical models; Time-domain analysis; Transient analysis; FDTD; GPR; dipole antennas; dispersion; far-field; near-field; realistic 3D antenna numerical modelling;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Ground Penetrating Radar (IWAGPR), 2013 7th International Workshop on

Conference_Location

Nantes

Print_ISBN

978-1-4799-0937-7

Type

conf

DOI

10.1109/IWAGPR.2013.6601508

Filename

6601508