In order to solve this drawback,a graded mesh technology in FDTD algorithm is proposed,which occupies less EMS memory space and computing time than the equal mesh technology.

• 为解决这个问题,提出了一种基于FDTD算法的渐变非均匀网格划分技术,在保证计算精度的基础上比均匀网格划分法占用更少内存和计算时间。