** Next:** Filtering method
** Up:** Guitton: Coherent noise attenuation
** Previous:** METHOD 2: A subtraction

In this section I show some preliminary results from testing the two proposed strategies.
The main operator **H** is the hyperbola superposition operator.
The adjoint is the hyperbolic Radon transform
Guitton (2000b); Nichols (1994).
The model space **m** is called the velocity space. The input data **d**
are CMP gathers. The process of computing the model **m** minimizing
Equation 12 is called *velocity inversion*.

Stanford Exploration Project

9/5/2000