“…Briefly, we derive a time-variable scaling function that we use to squeeze a constantvelocity DMO operator so that it approximates an exact DMO operator for a wide range of offsets and reflector dips. This approach was first proposed by Rocca (1982, personal communication), was developed by Rocca and others (Hale, 1983(Hale, , 1988Bolondi and Rocca, 1985;Deregowski, 1985Deregowski, , 1987, and has been used in various forms in the seismic processing industry. In this paper, we summarize and enhance this approach, and demonstrate its effectiveness with applications to synthetic and recorded seismic data.…”