Common-offset plane-wave prestack time migration and demigration

Based on the common offset prestack time migration in f-k domain given by Dubrulle, we deduce a pair of common-offset plane-wave prestack time migration operator and its reverse operator.The common-offset plane-wave prestack time migration is carried out with a-variable migration aperture in order to give a better imaging result.Further,the pair of the crossconjugate operators is eascated to implement the seismic data regularization process.It is mentioned that the least square seismic data regularization approach will greatly improve the numerical results.Numerical examples of the v(z) model and Marmousi model demonstrate that the approach is correct and effective.