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Interpolation in time and space

The output pseudo-primaries from equation 2 are in frequency, source position, and receiver position. We can reorganize this to time, offset, and source position, and then estimate a nonstationary PEF, either shot-by-shot by estimating 2D PEFs in time and offset, solving equation 3 for each shot, or on the entire data set with a single 3D PEF in time, offset, and source, solving a much larger version of equation 3. This PEF, or series of PEFs, is then used to fill in the missing near-offset gap using equation 4 either once or for each shot.


2009-04-13