Three-dimensional FDTD modeling of a ground-penetrating radar
Date
2000
Authors
Gürel, Levent
Oğuz, U.
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Abstract
The finite-difference time-domain (FDTD) method is used to simulate three-dimensional (3-D) geometries of realistic ground-penetrating radar (GPR) scenarios. The radar unit is modeled with two transmitters and a receiver in order to cancel the direct signals emitted by the two transmitters at the receiver. The transmitting and receiving antennas are allowed to have arbitrary polarizations. Single or multiple dielectric and conducting buried targets are simulated. The buried objects are modeled as rectangular prisms and cylindrical disks. Perfectly-matched layer absorbing boundary conditions are adapted and used to terminate the FDTD computational domain, which contains a layered medium due to the ground-air interface.
Source Title
IEEE Transactions on Geoscience and Remote Sensing
Publisher
IEEE
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Keywords
Finite difference time domain method, Ground penetrating radar, Perfectly matched layer, Subsurface scattering, Boundary conditions, Computational methods, Computer simulation, Electromagnetic wave polarization, Finite difference method, Mathematical models, Radar receivers, Radar transmitters, Receiving antennas, Three dimensional, Time domain analysis, Radar imaging
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Language
English
Type
Article