Browsing by Subject "Ground penetrating radar"

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    ItemOpen Access
    FDTD simulations of multiple GPR systems
    (IEEE, 2003-06) Oǧuz, Uğur; Gürel, Levent
    A multiple-GPR detection system was simulated. The main advantage of such a system was that it saves time by detecting both the transverse and the longitudinal positions of the target by a B-scan measurement, whereas the same detection can be achieved by a C-scan with a single-GPR system. Finite-domain time-difference (FDTD) method was employed to perform the simulations, in which the ground was homogeneous and the target was perfectly conducting.
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    ItemOpen Access
    Three-dimensional FDTD modeling of a GPR
    (IEEE, 2000) Oğuz, Uğur; Gürel, Levent
    The power and flexibility of the Finite-Difference Time-Domain (FDTD) method are combined with the accuracy of the perfectly-matched layer (PML) absorbing boundary conditions to simulate realistic ground-penetrating radar (GPR) scenarios. Three-dimensional geometries containing modes of radar units, buried objects and surrounding environments are simulated. Simulation results are analyzed in detail.
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    ItemOpen Access
    Three-dimensional FDTD modeling of a ground-penetrating radar
    (IEEE, 2000) Gürel, Levent; Oğuz, U.
    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.