摘要
讨论ZT-FDTD算法,针对其中的不足,提出使用基于Z变换的(FD)2TD算法计算色散半空间上三维有限长介质柱的宽带电磁散射特性。针对在不同极化及入射角情况下的宽带散射,运用(FD)2TD算法进行分析,将频域方程变换到Z域,再返回到时域进行差分计算,并给出仿真结果。
Frequency - dependent finite difference time domain （FDTD） algorithm has been discussed. Considering of its fault, （FD）2TD algorithm using Z transforms is introdeced to solve scattering of object whose length on three dimensions is finite on dispersive half - space. By means of Transferring frequency - domain equation to Z - domain, followed by differential calculation in time domain. This paper applies （FD）2TD algorithm to analyze and simulate the wide - band scattering under different polarization and incident angle.
出处
《计算技术与自动化》
2007年第1期74-76,共3页
Computing Technology and Automation
关键词
FDTD
Z变换
散射
色散媒质
FDTD
Z transform
scattering
dispersive media
