Description
Modeling coherent noise in the R-T domain
The radial trace transform is a simple transform to map gathers in x-t domain to into an apparent velocity and travel time domain. The apparent frequency of the ground roll will also be transformed in the RT domain. Ground roll can be extracted via the use of filters in the RT domain, to generate a noise model. This noise model can then be adaptively subtracted from your original input data. Results show that this method produces better results than an F-K filter, with less reduction in the amplitude spectrum.
The transform is defined by:
Parameters
Min velocity
Provide the minimum velocity for performing the radial transformation
Max velocity
Provide the maximum velocity for performing the radial transformation
Table type
Choose the table type i.e. Linear or Quadratic
Velocity min step
Provide the minimum velocity step
Velocity max step
Provide the maximum velocity step
Time coord R-T origin
Offset coord R-T origin
Sorting type
Choose the sorting type from the drop down menu.