Title :
Response of realistic soil for GPR applications with 2-D FDTD
Author :
Yang, Bo ; Rappaport, Carey
Author_Institution :
Center for Subsurface Sensing & Image Syst., Northeastern Univ., Boston, MA, USA
fDate :
6/1/2001 12:00:00 AM
Abstract :
The three-dimensional (3D), wideband, bistatic ground penetrating radar (GPR) scatter response of rough, realistic ground is efficiently and accurately simulated using a hybrid high resolution 3D and large area two-dimensional (2D) finite difference time domain (FDTD) model. The 3D computation carefully models the transmitting and receiving antennas, while the 2D FDTD models wave propagation between the antennas and the scattering by the soil below them. The FDTD soil model considers realistic frequency dependent (dispersive) soil with Gaussian height variations. The modeling results are compared to experiments performed with the Geo-Centers, Inc., Newton, MA, commercially available GPR system used for mine detection. Despite the simplicity of the 2D model, the results of the simulation and the experiment agree quite well
Keywords :
backscatter; buried object detection; finite difference time-domain analysis; geophysical techniques; radar cross-sections; radar theory; remote sensing by radar; soil; terrain mapping; terrestrial electricity; 2D method; FDTD; backscatter; bistatic ground penetrating radar; buried object detection; finite difference time domain model; geoelectric method; geophysical measurement technique; ground penetrating radar; land surface; numerical model; radar remote sensing; radar scattering; realistic soil; response; rough surface; scatter response; terrain mapping; terrestrial electricity; two dimensional method; Antennas and propagation; Computational modeling; Finite difference methods; Frequency dependence; Ground penetrating radar; Radar scattering; Receiving antennas; Soil; Time domain analysis; Transmitting antennas;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
