WAVE-FIELD SIMULATION METHOD FOR EXTENDING FINITE-DIFFERENCE STABILITY CONDITIONS, AND APPARATUS AND MEDIUM FOR IMPLEMENTING SAME

摘要

A wavefield simulation method for extending the explicit finite-difference stability condition comprises: performing a time-step iteration on the basis of a wave-field numerical simulation model and adopting the spatial filtering method to filter out wave-field components appearing in the high wave number region (S1); when all time-step iterations end, saving wave-field data that obtained from the time iterations (S2); performing the inverse time-dispersion transform on the target wave-field data required to be output from the wave-field data, so as to obtain the wave-field data with time-dispersion removed (S3); and saving the wave-field data after the inverse time-dispersion transform processing (S4). Further provided are an electronic apparatus and a computer-readable storage medium used to implement the wave-field simulation method for extending the explicit finite-difference stability conditions.