Coordinate Reference Systems
Remarks
Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Equivalent to ITRF91 to ITRF2000 (1) (CT code 6284) converted to epoch 2000.0 concatenated with ITRF2000 to ETRF2000 (1) (CT code 7940) converte to epoch 2000.0.
Frequently Asked Questions
What is the accuracy of the ITRF91 to ETRF2000 transformation?
This transformation (EPSG:7944) has an accuracy of 0.01m using the Time-dependent Position Vector tfm (geocentric) method. Area of use: Europe - ETRF.