Coordinate Frame rotation (geog2D domain)
Scale difference in ppb where 1/billion = 1E-9. See CT codes 8444-46 for NTv2 method giving equivalent results for Christmas Island, Cocos Islands and Australia respectively. See CT code 8447 for alternative including distortion model for Australia only.
GDA2020 Technical Manual (http://www.icsm.gov.au).
2019-10-14
Geodesy.
See CRS code 4283 for recommended coordinate axis representation for the human interface.
Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: dec deg