Title :
Borehole radar simulation for mineral detection by FDTD
Author :
Sixin Liu ; Sato, M.
Author_Institution :
Department of Geophysics, Jilin University, Changchun, China
Abstract :
We develops a finite-difference time-domain (FDTD) code suitable for modeling borehole radar measurement. Transmitting and receiving antennas are modeled exactly by using sub-grid technique while the antenna equivalent circuits are considered for transmitter and receiver. Borehole radar responses to several mineral bodies are simulated numerically and analyzed. It is found that the radar responses are affected by not only the locations but also the orientation of mineral bodies. When the ore is symmetry like a point target, the radar signals look like a hyperbola. But for a planar vein with certain size and geometry, the radar signals are complex. Although the natural existence of the mineral bodies is diverse, these simulations could still provide us some insights into the capability of borehole radar detection.
Keywords :
Boundary conditions; Finite difference methods; Geology; Magnetic fields; Minerals; Numerical simulation; Radar antennas; Radar detection; Radar imaging; Time domain analysis; borehole radar; dipole antenna; finite difference time domain (FDTD);
Conference_Titel :
Ground Penetrating Radar, 2004. GPR 2004. Proceedings of the Tenth International Conference on
Conference_Location :
Delft, The Netherlands
Print_ISBN :
90-9017959-3