Title :
A technique for calculating the subsurface EM problems
Author :
Guang-You Fang ; Yan-Ming Xiao
Author_Institution :
Dept. of Inf. & Control Eng., Xi´´an Jiaotong Univ., China
Abstract :
It is demonstrated that the FDTD (finite-difference time-domain) method is an effective numerical method for calculating the electromagnetic (EM) pulse response and transient problems of a buried body in a lossy medium. The FDTD method is used to calculate the underground EM scattering problems with Gaussian pulse and sinusoidal plane wave illuminations. The results obtained are useful for underground detections. For example, by comparing the computed data with experimental results, one can predict the shape or EM characteristics of the buried object. For sinusoidal plane wave illumination, the steady-state results are excellent.<>
Keywords :
difference equations; electromagnetic pulse; electromagnetic wave scattering; time-domain analysis; transients; EM characteristics; EM transients; EMP response; FDTD method; Gaussian pulse illumination; buried body; buried object; finite-difference time-domain; lossy medium; numerical method; shape; sinusoidal plane wave illumination; steady-state results; subsurface EM problems; underground EM scattering; underground detections; Differential equations; Earth; Electromagnetic radiation; Maxwell equations; Partial differential equations; Scattering;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location :
Dallas, TX, USA
DOI :
10.1109/APS.1990.115435
