CONCLUSIONS

I selected two Fourier domain modeling algorithms, based on the conjugate transpose of the Phase Shift Plus Interpolation and Split-step migration algorithms, and implemented them on a parallel computer (Connection Machine 2). I compared the modeling results of the two methods on 2-D and 3-D laterally varying velocity models. Even though the PSPI migration algorithm handles lateral velocity discontinuities better than the Split-Step migration algorithm (Popovici, 1991), it appears that in the modeling case the image quality performance is reversed.