各向同性空隙介质中波的传播的解析形式，应用下文的方法： Dai, N., Vafidis, A. & Kanasewich, E.R., 1995. Wave propagation in heterogeneous, porous media: A velocity-stress, finite-difference method, Geophysics, 60, 327-340. 更加详细的介绍见英文描述，该代码对于做波场模拟的同学有很好的参考价值。-MATLAB scr ip

This MATLAB M-file implements the finite-difference time-domain solution of Maxwell s curl equations over a two-dimensional Cartesian space lattice comprised of uniform square grid cells. To illustrate the algorithm, a 6-cm-diameter metal cylindric