Blueprint Subsea Oculus data files
Blueprint Subsea Oculus *.oculus V1 file format
The Blueprint Subsea Oculus *.oculus V1 file format is supported by Echoview. Oculus multibeam imaging sonars produce several high quality images per second, making it possible to view movie-like imagery. Blueprint Subsea Oculus files can be verified by Echocheck.
Echoview reads sample magnitude, heading, pitch and roll values recorded in the data file. The Oculus system may also record operating depth and water temperature which are used to calculate the range for samples.
r = 0.5xcxt
r is the range (m)
c is the sound speed (m/s). The Oculus system accepts a user-specified Salinity value that is used to calculate the sound speed.
t is the time of the received echo (s)
Notes:
- Heading, pitch and roll values are measured relative to an origin plane on a platform or other structure like a transducer. For further information, refer to Blueprint Subsea.
- Echoview only reads non-zero values from the data file for heading, pitch or roll variables.
- Echoview derives variables for data with a positive start range. As a result samples with a negative start range are omitted.
Blueprint Subsea Oculus *.oculus V2 file format
The Blueprint Subsea Oculus *.oculus V2 file format is output by the BluePrint Subsea ViewPoint V2 software, and Oculus instruments that natively output the *.oculus V2 file format. Echoview's support is based on the *.oculus V1 file format support. In addition, the following data are read by Echoview and are associated with raw variable calibration values. To extract values as a time series, use the Interval analysis - Calibration operator.
Data in *.oculus V2 file |
Appears in Echoview under the |
Gamma Control values. |
Calibration setting Gamma. |
Occulus 512 Beams Control (Inactive or Active). |
Calibration setting Oculus512Beams. |
Oculus Gain Control values. |
Calibration setting OculusGain. |
Gain Assist values (Inactive or Active). |
Calibration setting OculusGainAssist. |
Gain Boost Control (Inactive or Active). |
Calibration setting OculusGainBoost. |
Pressure (kPa) values from an integrated pressure sensor. |
Calibration setting Pressure. |
See also
Calibration settings for Blueprint Subsea Oculus data
Raw variables derived from Blueprint Subsea Oculus data
Multibeam display note