Abstract：The method for prestack separation of wave fields is described here. This method involves the time-distance equation of reflection wave in layered medium，and coordinate stretch processing of prestack shot-trace gathers or CMP trace gathers is made in time-offset domain. Then the linear Radon transform is conducted.Because the wave fields after transform have different velocities and To times，they are distributed on different positions;thus they will be easily separated in transform domain. Then the various wave fields are respectively transformed into timeoffset domain by inverse transform，so the wave fields will be separated quite completely.Satisfied processing results have been achieved in processing two component elastic-wave synthetic seismograms. P-wave fields，PSV-converted wave fields and P-wave secondary reflection wave field are separated off successively. Because this method is based on hyperbolic characteristics and velocity contrast of reflection waves，it is applicable to the separation of arbitrary prestack wave fields related with reflection waves.
李彦鹏, 马在田. 坐标拉伸后的线性拉冬变换法波场分离[J]. 石油地球物理勘探, 1998, 33(5): 611-615,624.
Li Yanpeng, Ma Zaitian, LiYanpeng. Wave field separation by linear Radon transform after coordinate stretch. OGP, 1998, 33(5): 611-615,624.
