Modeling of Ground-Penetrating Radar for Detecting Buried Objects in Dispersive Soils
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Modeling of Ground-Penetrating Radar for Detecting Buried Objects in Dispersive SoilsAbstract
The detection of buried targets with groundpenetrating radars (GPRs) has been an issue of considerable attention during the last decades. In this paper, an efficient three-dimensional (3-D) time-domain numerical method is proposed for the simulation of GPR on dispersive soils. The soil is considered as an M-th order Debye medium with additional static conductivity and an unsplit-field perfectly matched layer (PML) is also presented to terminate such media. The radar unit is modeled with two transmitters and one receiver in order to eliminate undesired signals. The impact of radar frequency, soil parameters and object depth upon the ability to detect buried targets is investigated through several finite-difference time-domain (FDTD) simulations. The detection of multiple dielectric and conducting buried objects in stratified and inhomogeneous soils can be feasible through the tracing of the received energy of B-scan measurements in perpendicular linear paths.
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1000 1500 2000
−15
−10
−5
Time Steps
Radar Position
Emax
=0.00030293
2 0.4 0.6 0.8 1
−15
−10
−5
Energy
Radar Position
Energymax
=96.7939
(b)
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PROKOPIDIS, TSIBOUKIS: MODELING OF GROUND-PENETRATING RADAR FOR DETECTING BURIED OBJECTS
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