中文说明：
基于matlab使用FDTD迭代算法进行了一个平面波传播的仿真模拟，有助于FDTD算法的初学者更好理解算法。
English Description：
Based on MATLAB, a plane wave propagation simulation is carried out by using FDTD iterative algorithm, which is helpful for beginners of FDTD algorithm to better understand the algorithm.