Sail line interpolation

The most difficult of the interpolation tasks required for 3D SRME is the interpolation of sail lines. This was not attempted in this paper for several reasons. The first of which is that the idealized geometry in this synthetic example is far from the reality of marine acquisition. The sail lines are not parallel, and the receiver cables feather differently from sail line to sail line.

In addition to the issues of inconsistency in the geometry from sail line to sail line, there is also the issue of the sheer amount of additional data needed. In order to reach the desired density of data, a factor of 16 is needed in the interpolation, or a factor of 8 if the flip-flops have been previously interpolated.