The second operator, PS-DMO, is an operator in the
frequency wavenumber log-stretch domain.
Since this operator is stationary in the time log-stretch domain,
the use of FFT in both directions is possible. Additionally, the
*f-k* log-stretch PS-DMO operator is computationally efficient.
PS-DMO is accurate kinematicly and also handles the amplitudes
for steeply dipping reflections more accurately than
existing PS-DMO operators.

The first two operators transform the data into an image that is in the time () domain. Both PS-NMO and PS-DMO have several limitations, PS-NMO is not a valid transformation in geologically complex areas. Also, PS-DMO uses an approximation for the CMP to CCP correction that depends on , which is a difficult parameter to determine from the data. Therefore, the appropiate operator is the wave-equation-based migration operator, since the dimensions of the model space are depth, image-midpoint, and image-offset, that as seen in the Chapters 3, and 5, this domain is the most appropiate to image PS data.

12/14/2006