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In a homogeneous media, . Hence the
correction is simply a division by *k*_{z0} of
the source wavefield at the surface.
If a split-step formulation of is considered,
then the corrections must be carried out both in the space and
wavenumber domain.
One solution consists of doing the following expansion:
| |
(19) |

It is now possible to perform the correction in a few stages in the space and
wavenumber domain.

** Next:** Implementing the operator
** Up:** Implementing the operator
** Previous:** Finite differences
Stanford Exploration Project

7/8/2003