高阶减缩时域有限差分的一种实现方法

An Implement Method of High-order Reduced Finite Differene Time Domain

减缩时域有限差分(R-FDTD)法是一种高效节约存储量的算法,但目前对时间和空间的差分均只有二阶精度。本文提出了对时间和空间的差分分别具有2M阶和2N阶精度的R-FDTD的一种实现方法,相对于目前的R-FDTD,并不增加存储量。数值实验证实了这一方法的有效性。

Reduced finite-difference time-domain （R-FDTD） method is a memory-efficient algorithm,but the differences about time and space of the method have the accuracy of only 2 order. In this paper,an implement method of R-FDTD which has 2M order and 2N order accuracy differences about time and space respectively is brought forward, and the method needn＇t extra computer memory in comparison with the present R-FDTD method. The validity of the proposed method is verified by numerical experiments.