Title :
Three-dimensional FDTD modeling of a GPR
Author :
Oguz, U. ; Gurel, L.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara, Turkey
Abstract :
Numerical modeling and simulation of ground-penetrating radar (GPR) systems have been recognized as the preferred means of obtaining an understanding of subsurface-scattering mechanisms. Among the techniques used, the finite-difference time-domain (FDTD) method has been distinctly popular due to its versatility in solving problems involving arbitrarily complicated inhomogeneities. In this paper, realistic three-dimensional GPR scenarios are simulated using the FDTD method and the perfectly-matched layer (PML) absorbing boundary conditions. The radar unit, which contains the transmitting and receiving antennas, moves over the ground-air interface on a predetermined path.
Keywords :
buried object detection; digital simulation; electrical conductivity; electromagnetic wave absorption; electromagnetic wave scattering; finite difference time-domain analysis; inhomogeneous media; permittivity; radar antennas; radar applications; radar signal processing; receiving antennas; transmitting antennas; 3D FDTD modeling; GPR systems; PML absorbing boundary conditions; buried object detection; conductivity; finite-difference time-domain method; ground-air interface; ground-penetrating radar; inhomogeneities; numerical modeling; numerical simulation; perfectly-matched layer; permittivity; radar unit; receiving antenna; rectangular prisms; subsurface-scattering mechanisms; transmitting antenna; Buried object detection; Directive antennas; Finite difference methods; Ground penetrating radar; Radar antennas; Radar scattering; Receiving antennas; Time domain analysis; Transmitters; Transmitting antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.874882
