EIVA a/s has in cooperation with the Norwegian Time Group (Acergy, DeepOcean, DOF Subsea, Scan Maritime and Statens Kartverk) founded by Norsk Hydro and Statoil, initiated a project on defining the ultimate time tagging solution to high level survey.
The basic requirement is that the acquisition software must not add any errors to the final solution due to time tagging of sensor data.
Based on analyze performed in the time group it was determined that the timing accuracy must be better than ½ ms.
It is EIVA's experience that this isn't possible on the standard Windows PC platform that we are building all acquisition applications upon. We have therefore initiated and completed the development of a dedicated sensor time unit called TimeBox.