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X-interpolation
. This procedure is purposed for movement judder along the profile
effect removal and forming of the file with the constant specified interval between
traces. There are two alternatives:
General
and
by Marks
.
By Marks
is used in
cases of manual positioning when marks with known coordinates are located along the
profile.
General
is used when the wheel or GPS is used for positioning.
Moveout correction
rebuilding profile to the pattern as it would be if signal radiated
and received in a point located in the middle between antennas (for details see Chapter
10).
Stacking.
Setting a number of traces which will be added together in the average
trace. Stacking contributes to suppression of noise and interference and to increase of
the depth rating. However, it should be remembered that stacking decreases the trace
amount and horizontal resolution. If the parameter is set to 1, no staking is performed.
Time-depth conversion
should be used for restructuring the initial time profile into
a depth profile in compliance with the velocity areas as set in annotations. Profile
portions for which no areas are set shall be restructured in compliance with the mean
dielectric permeability specified in the profile parameters.
Fig. 13.5. Example of using the time-depth conversion procedure.
Left-hand: initial areas; right-hand: resulting areas.
Fig. 13.6. Example of using the time-depth conversion procedure.
Left-hand: initial profile; right-hand: resulting profile.
