Phase Rotation

Description Apply a phase rotation to a volume.
Module(s) Insight
Requirements Volume
Related Spectra Analysis
Works with 2D, Stacks, Gathers

The Phase Rotation process applies a phase rotation to volumes.

Phase rotation of values other than 0 or 180 degrees is computationally-intensive. The resulting output volume may be very slow to use, particularly when viewing time-slices and amplitude extractions. To avoid performance issues, export the result volume to dugio format (see Exporting a Volume to DUG I/O) and use it instead.

Create a phase rotation process

Create a phase rotation process
  1. In the Control Panel, open the Process tab.
  2. At the tab header, click the Add icon and select New Process.
  3. Scroll down and double-click on Phase Rotation.
  4. Type a name for the process and click OK.

Phase Rotation settings

Define settings for phase rotation
  1. Volume: Select a volume to phase rotate.      

Note: You cannot apply phase rotation on a depth volume. Instead, first convert the volume to time (TWT) domain using the Volume Resampling process or export the volume to time domain as described in Exporting a Volume to DUG I/O.    

The amount of phase rotation can be constant, or vary according to values in a trace header.

Define settings for phase rotation
  1. Constant mode: A single phase rotation is applied to the entire volume
  2. Degrees: The amount of phase rotation to apply
  1. Trace Header mode: The rotation value to apply is read from a trace header.
  2. Degrees: Select the header to read for the phase value, with optional scaling and offset.
  3. A new phase rotation volume is available in the Volume tab.