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The module CMP-analysis consists of two parts (the CMP-velocity-analysis and the CMP-processing). The module is useful for the following applications:
 

   reflection seismics

   GPR (Ground penetrating radar)
 
 
 

CMP-velocity-analysis

 
 
The CMP-velocity-analysis allows the calculation of a one-dimensional velocity-depth- distribution from CMP- or moveout-data based on different analysis techniques.
The module offers the following possibilities:
  • interactive generation and change of a velocity-model for a CMP- or a moveout-section with continuous indication of the actual reflections 
  • semblance analysis for a given velocity-interval, interactive choice of a vrms-depth- distribution from the semblance analysis or from the interactive adaptation panel 
  • loading of a second CMP-section for a parallel adaptation of the reflections 
  • loading of a zero-offset section with true distance information for a calibration of the correspon- ding reflections 
  • generation of a 2-dimensional velocity-model based on the resulting 1D-velocity-depth dis- tributions. This 2D-model represents the base for the stacking. 
 

CMP-processing


 


 

 
 
The CMP-processing allows the sorting of raw data to CMP, Common Shot, Common Receiver and Common Offset. It is very easy to change interactively between the given sorting possi- bilities. 
Stacking of CMP-Gather, Common Shot-Gather or Common Receiver-Gather is possible based on a 2-dimensional velocity-distribution (see velocity analysis) or using a slant stack algorithm. 
   
 
 
There are different possibilities of entering or changing the geometry:
Two different standard geometries are implemented: moving line and fixed line.
Activating moving line allows you to define the geometry for a geophone line moving with the shots. 
Activating fixed line allows you to define the geometry for a fixed geophone line for different shot points.
In addition the geometry of each trace may be edited individually and the geometry may also be loaded from an ASCII-file. 

 

 

 
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