电磁波斜入射分层介质问题FDTD分析

分层半空间二维斜入射问题一般转化为一维情况来处理，但该处理方法的有效性与入射角的大小紧密相关。对一维修正处理方法斜入射角度的适用范围进行了研究，同时，利用该方法研究了介质的介电常数、电导率和色散特性对反射波时域、频域特性的影响，结论对分层半空间问题FDTD分析、地物反演等应用有重要指导作用。

FDTD analysis for electromagnetic wave by layered medium problem under oblique incidence condition

Two dimensional oblique incidence problem of layered half space is generally translated into one dimensional condition to process, however, the effectiveness of this treatment method is closely related to the size of the angle of incidence. In this paper, the oblique incidence angle size of a one dimensional corrected processing method is researched, in the same time, using this method the impact on the time domain, frequency domain characteristics of the reflected wave is researched caused by dielectric constant , conductivity and dispersion characteristics of medium. The conclusion has a good guidance for FDTD analysis of layered half space and engineering applications such as the inversion of ground object.