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Equation (5) assumes that the signal PEF is known in advance.
This argument is circular since we are estimating the signal needed
to compute ! Nonetheless, Spitz (1999) shows that
can be estimated directly from the data PEF and the noise PEF . Again, we assume that we are able to
compute a model for the coherent noise we wish to attenuate.
In equation, the signal PEF can be estimated as follows:
| |
(8) |

In the next section, I show on a simple 1D example that this estimate
makes the overlap of the signal and noise operators and impossible

** Next:** A 1D example
** Up:** Stability of the Hessian
** Previous:** Stability of the Hessian
Stanford Exploration Project

6/7/2002