Wave-field simulation method for extending finite-difference stability conditions, and apparatus and medium for implementing same

An electronic apparatus, comprising a memory, a processor, and a computer program which is stored in the memory and is to be run in the processor, wherein the processor implements a method comprising the following steps:

• performing a time-step iteration on the basis of a wave-field numerical simulation model and adopting a spatial filtering method to filter out unstable wave-field components distributed in the high wave number region;
• when all time-step iterations end, saving wave-field data obtained from the time iterations;
• performing the inverse time-dispersion transform on target wave-field data required to be output from the wave-field data, so as to obtain wave-field data with time-dispersion removed;
• and
• storing the wave-field data obtained after the inverse time-dispersion transform processing.

A computer-readable storage medium, having a processor program stored therein, wherein the processor program implements a method comprising the following steps:

• performing a time-step iteration on the basis of a wave-field numerical simulation model and adopting a spatial filtering method to filter out unstable wave-field components distributed in the high wave number region;
• when all time-step iterations end, saving wave-field data obtained from the time iterations;
• performing the inverse time-dispersion transform on target wave-field data required to be output from the wave-field data, so as to obtain wave-field data with time-dispersion removed;
• and
• storing the wave-field data obtained after the inverse time-dispersion transform processing.