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According to Ottolini 1982, the DSR equation for the
downward continuation of common midpoint slant stack is
| |
(2) |
where
The solution of equation (2) is
| |
(3) |
We can use this equation to obtain the wave extrapolation for constant
velocity. Velocity variations in depth are easily accommodated by
varying the velocity v with depth z in equation (3).
*2cm
dum
Figure 1 Computational flow chart of prestack slant stack
migration with one-pass PSPI.
Next: IMPLEMENTATION FOR LATERAL VELOCITY
Up: Lin: Prestack PSPI
Previous: SLANT STACK TRANSFORMATION
Stanford Exploration Project
11/17/1997