Canada
- The U.S. is replacing NAD83 with NATRF2022: what this means for Canada
- Mind the gap! A new position reference
- Reference Frame Modernization in Canada
United States
U.S. National Spatial Reference System (NSRS) blueprint documents:
- Part 1: Geometric Coordinates and Terrestrial Reference Frames (2017a)
- Part 2: Geopotential Coordinates and Geopotential Datum (2017b)
- Part 3: Working in the Modernized NSRS (2019a)
