We propose applying the AMO operator Biondi and Chemingui (1994a); Fomel and Biondi (1995a) to project
irregular 3-D surveys with wide azimuthal
coverage onto a regular midpoint-offset subsets with a common source-receiver
azimuth.
The resulting regular geometry
lends itself handily to other processing algorithms that require regular grids.
An example of an irregularly sampled subset of a 3-D wide-azimuth
data is shown in Figure
2. Traces whose source-receiver offset is between 7000
and 9000 ft and azimuth between -30^{o} and 30^{o} were extracted
from a true 3-D land survey
and we plotted the surface locations of their common
mid-points.

In the next section, we discuss the 3-D land data and its acquisition geometry. We show how we can use the real data example to generate numerical simulations and apply our technique to process a synthetic reflectivity model.

Figure 2

11/12/1997