Second-order acoustic wave equation finite difference numerical simulation parameter selection method

The invention discloses a second-order acoustic wave equation finite difference numerical simulation parameter selection method. The method comprises the following steps: step 1, adding frequency dispersion to seismic source wavelets; 2, setting a frequency dispersion error evaluation criterion and an error threshold; 3, screening a finite difference parameter combination according to an error evaluation criterion and a proper error threshold value; 4, finite difference discretization is carried out on the second-order sound wave constant density wave equation, and a calculation amount objective function is established; and 5, calculating a finite difference parameter corresponding to the minimum value of the target function according to the calculated amount target function. The method has the advantage that finite difference parameter selection under the principle that the calculated amount of the second-order acoustic wave equation is minimum is achieved. 本发明公开了一种二阶声波方程有限差分数值模拟参数选取方法。它：包括如下步骤，步骤一：震源子波加频散；步