WAVE FIELD SIMULATION METHOD, APPARATUS AND DEVICE FOR EXPANDING EXPLICIT DIFFERENTIAL STABILITY CONDITIONS

摘要

A wave field simulation method, apparatus and device for expanding explicit differential stability conditions. The method comprises: performing finite differential discretization on a first wave equation according to a set time step and wave field simulation model parameters (S110) to obtain a discrete second wave equation; performing time dispersion transformation on a first source function of the second wave equation (S120) to obtain a second source function; performing eigenvalue perturbation on a first growth matrix of the second wave equation (S130) to obtain a second growth matrix; substituting the second source function and the second growth matrix into the second wave equation to obtain a new stable wave field iteration formula (S140); using the new stable wave field iteration formula to perform wave field numerical simulation (S150) so as to obtain first wave field data; performing an inverse time dispersion transform operation on target wave field data that needs to be outputted in the first wave field data (S160) so as to obtain second wave field data having removed time dispersion.