NUMERICAL SIMULATION OF TIME-DOMAIN EM SCATTERING BY SHALLOW SUBSURFACE OBJECTS  

作　　者：Fang Guangyou Zhang Zhongzhi (China Hesearch Institute of Radiowave Propagation, Xinxiaog 453003)Wang Wenbing(Xi’aa Jiaotong University, Xi’an 710049) 

出　　处：《Journal of Electronics(China)》1996年第3期267-274,共8页电子科学学刊（英文版）

摘　　要：The time-domain ElectroMagnetic(EM) scattering by buried objects in dispersive media is calculated with FD-TD method. The FD-TD formula in Debye dispersive media (both the complex permeability and the complex permittivity are described by Debye equations) are deduced, and the absorbing boundary condition is given. The validity of FD-TD method in lossy media is verified through comparing the FD-TD’s results and the other ones. The propagation of transient pulses in dispersive media is studied in detail. The scattering pulses and the wiggle traces for typical buried objects are given.The time-domain ElectroMagnetic(EM) scattering by buried objects in dispersive media is calculated with FD-TD method. The FD-TD formula in Debye dispersive media (both the complex permeability and the complex permittivity are described by Debye equations) are deduced, and the absorbing boundary condition is given. The validity of FD-TD method in lossy media is verified through comparing the FD-TD's results and the other ones. The propagation of transient pulses in dispersive media is studied in detail. The scattering pulses and the wiggle traces for typical buried objects are given.

关 键 词：FD-TD method DISPERSIVE media BURIED OBJECTS BASEBAND pulse Electromagnetic scattering 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]