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Curiously I find that people do not like the idea of a filter
needing to have two outputs.
A false start (for me too) is to guess an operator like
| |
(2) |

to kill the plane .While it is true that *G*_{1} kills this plane,
it also kills the two planes
and
*f*_{2}(*p*_{x} *x* - *p*_{y} *y*)
so it does not do the job we need,
a low order filter that rejects one and only one plane.
Thus,
the way to annihilate any signal on any dipping plane without annihilating signals on any other planes
is to annihilate the two volume outputs of the vector filter
.Where these two volumes are already zero
the migrated data fits our notions of what a migrated data set should be,
so there is nothing more to be done--no parameters can be fitted
to embellish the model.
Where either of the two volumes is nonzero,
there more than one planar event occurs on the input
(or the (*p*_{x},*p*_{y}) field was incorrectly estimated).

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Stanford Exploration Project

11/18/1997