The PS-AMO operator that we used had the advantage of not
demanding data in the CRP domain. This operator,
as a cascade operation of PS-DMO and its inverse,
internally performed the CMP to CRP lateral-shift correction,
since the PS-DMO operator does it as well.
Therefore, *a priori* CRP binning was not necessary before
applying azimuth moveout to converted-wave data.
The PS-AMO operator had two main
characteristics: 1) it preserved the resolution of the dipping events, and
2) it corrected for the spatial lateral shift of the common reflection
point.

PS-AMO has several applications. In this work, we tested the operator for the problem of irregular geometries; more specifically the converted-wave portion of OBS seismic data. In this case, the geometry-regularization problem was handled in the least-squares sense.

Our methodology gave promising results for the irregular-acquisition-geometry problem focused on converted-wave data. We were able to obtain an interpolated data set that honored the input data and the nonhyperbolic moveout of converted-wave data. Although we used a hyperbolic moveout equation, which is valid only for short offset and shallow depth, we still obtained satisfactory results.

4/5/2006