Iterative Pre-stack depth migration time converted (PSDM-TC) stack section for better seismic imaging

Seismic imaging is a two-step process of velocity analysis and migration. As the velocity function becomes more complex, the two steps become more interdependent. In complex depth-imaging problems, velocity estimation and migration are often applied iteratively. To assure that this iterative imaging process converges to a satisfactory model, it is crucial that the migration and velocity estimation procedures are consistent with each other. In this paper, velocity analysis and imaging are combined in one step and migration will be used as a velocity analysis tool. So a method similar of Silva & Wang (٢٠٠٢) for iterative PSDM-TC stack used for imaging both synthetic and real data.