A COMPLETE FDTD SIMULATION OF A REAL GPR ANTENNA SYSTEM OPERATING ABOVE LOSSY AND DISPERSIVE GROUNDS
- 1 January 2005
- journal article
- Published by The Electromagnetics Academy in Progress In Electromagnetics Research
- Vol. 50, 209-229
- https://doi.org/10.2528/pier04061002
Abstract
The finite difference time domain (FDTD) method is used to analyze a practical ground penetrating radar (GPR) antenna system operating above lossy and dispersive grounds. The antenna is of the resistor-loaded bow-tie type and the analysis is made for two known soil types, namely Puerto Rico and San Antonio clay loams. The soil is modeled by a two term Debye model with a static conductivity and it is matched to the mentioned soils by using curve fitting. The FDTD scheme is implemented by the auxiliary differential equation (ADE) method together with the uniaxial perfectly matched layer (UPML) absorbing boundary conditions (ABC). In order to model a real GPR environment, ground surface roughness and soil inhomogeneities are also included. The effect of soil properties on the GPR response and antenna input impedance is presented. Thus the ability to detect buried metal and plastic pipes is investigated.Keywords
This publication has 10 references indexed in Scilit:
- A deep parametric study of resistor-loaded bow-tie antennas for ground-penetrating radar applications using FDTDIEEE Transactions on Geoscience and Remote Sensing, 2004
- Frequency responses of ground-penetrating radars operating over highly lossy groundsIEEE Transactions on Geoscience and Remote Sensing, 2002
- Simulations of ground-penetrating radars over lossy and heterogeneous groundsIEEE Transactions on Geoscience and Remote Sensing, 2001
- Finite-difference time-domain simulation of ground penetrating radar on dispersive, inhomogeneous, and conductive soilsIEEE Transactions on Geoscience and Remote Sensing, 1998
- An anisotropic perfectly matched layer-absorbing medium for the truncation of FDTD latticesIEEE Transactions on Antennas and Propagation, 1996
- A fully three-dimensional simulation of a ground-penetrating radar: FDTD theory compared with experimentIEEE Transactions on Geoscience and Remote Sensing, 1996
- A perfectly matched anisotropic absorber for use as an absorbing boundary conditionIEEE Transactions on Antennas and Propagation, 1995
- A simple FDTD model for transient excitation of antennas by transmission linesIEEE Transactions on Antennas and Propagation, 1994
- Finite-difference time-domain modeling of curved surfaces (EM scattering)IEEE Transactions on Antennas and Propagation, 1992
- Numerical Solution of Steady-State Electromagnetic Scattering Problems Using the Time-Dependent Maxwell's EquationsIEEE Transactions on Microwave Theory and Techniques, 1975