Abstract：One-step depth migration based on ray theory is efficient and applicable to low S/N seismic data,but remains difficult to achieve.The authors think that the key to successful one-step ray depth migration is to well cope with ray velocity variation in all directions.Satisfactory one-step ray depth migration can be achieved by calculat ing variable ray velocity with the use of“medium velocity”in depth domain,and re- placing traditional hyperbolic diffraction curve with actual diffraction curve.
王勇, 杨治楷, 杨智仁. 射线变速深度偏移[J]. 石油地球物理勘探, 1993, 28(2): 127-132.
Wang Yong Yang Zhikai Yang Zhiren. Ray depth migration in velocity varied medium.. OGP, 1993, 28(2): 127-132.
