Geodetic control refers to
|“||horizontal or vertical survey monuments that are primarily intended to serve as reference positions for other surveys or that serve to extend the national geodetic control networks.||”|
|“||[a] [c]ommon reference system for establishing coordinate positions (e.g., latitude, longitude, elevation) for geographic data.||”|
It provides a common reference system for establishing coordinates for all geographic data.
All NSDI framework data and users' applications data require geodetic control to accurately register spatial data. The National Spatial Reference System is the fundamental geodetic control for the United States.
- ↑ Geospatial Information and Geographic Information Systems (GIS): An Overview for Congress, at 3.
- ↑ Licensing Geographic Data and Services, Glossary, at 274.
- OMB Circular No. A-16, App. E.