Wave Equation Datum Continuation Based on Simulated Annealing Optimized FFD Operator

In this article, we present a new technique to do wave equation datum continuation. The method is based on a global optimization FFD operator whose parameters are optimized by simulated annealing algorithm. We extend the number of the FFD operator’s parameters from 2 to 4 to improve the precision of wave-field after continuation on the premise of no increasing calculation. Example on the theoretical model data shows that the method could remove the influence of shallow subsurface and make the structures of underlying strata recovered.