Wavelet pseudo spectral method in wave

代码说明：

% MATLAB function to initialize and call the solve_sps2d % function, which implements a 2-D solution of % the nonlinear wave equation using a psuedospectral % / staggered A-B method, including attenuation modeled % with two relaxation mechanisms. % % This example demonstrates harmonic generation % within a plane wave given a B/A parameter of 5.2. % % To increase the distance of propagation, scale the % sample grid (num_axpts) by a factor(s) of 2. % % Martin E. Anderson % Created:  10-4-00 Last modified: 10-11-00