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A Study About the Propagation and EM Scattering of Baseband Pulse in Frequency-Dependent Media by FD-TD Method

Fang Guangyou; Zhang Zhongzhi(China Research institute of Radiowave Propagation)Wang wenbing(Xi'an Jiaotong University)  
The propagation and Electromagnetic (EM ) scattehng of baseband pulse in frequency- dependent media are calculated by 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 through Z--transforms. The validity of AD-TD method in boy media is verified by comparing the FD--TD results with other ones. Three absorbing boundary conditions in disperaive media are compared. The propagation of transient baseband EM pulse in different dispersive media is discussed in detail. The EM scattering curves and the wiggle traces are given for several typical subsurface anomalies.
【CateGory Index】: O441.6
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