Amplitude correction operators: An important quantity for my
implementation of LSJIMP was x_{p}, the width of the primary leg of a
pegleg multiple [equation ()]. Like the offset
vector in 3-D, x_{p} also becomes a vector quantity:
| |
(32) |
As noted earlier in this chapter, with narrow azimuth data it makes the
most sense not to do Snell Resampling in the crossline direction.
Still, the crossline offset of the ``reduced'' CMP gather may still be
nonzero, and will affect the value of x_{p,1}.
The differential geometric spreading correction derived in section
remains unchanged, with the exception of
substituting equation () for squared offset in
equations () and ().
The estimation of a multiple generator's reflection coefficient in 3-D
remains similar to the 2-D case, although the model is a function of two
varibles, CMPx and CMPy, and the data may (full 3-D) or may not (narrow
azimuth) be a function of crossline offset.