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While f-x prediction generally produces results similar to those
of t-x prediction, f-x prediction may create spurious events
when parallel events occur in the presence of noise.
These spurious events are caused by the long filter length in time
of the effective time-domain filter of the f-x filter.
The t-x prediction avoids the generation of false events
in the presence of strong parallel events
by limiting the length of the filter in time.
With both f-x and t-x predictions, wavelets may be
distorted, since events with wavelets may be considered
as closely spaced sets of parallel events.
In typical seismic data, this problem is unlikely to be
a serious problem, but if a few isolated reflections appear
in a field of noise, weak events may be generated that will
confuse the interpretation.
In the next chapter, a solution to this shortcoming of
f-x and t-x prediction will be presented.

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** Up:** Spurious event generation with
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Stanford Exploration Project

2/9/2001