Converter
gravity-based reference surface · Geodesy / gravity · Modern scientific
geoid
reference-only
- Record
- M602
- Definition quality
- Standardized
- Conversion mode
- reference only
- Calculator
- Reference only
Definition
The geoid is a gravity-based reference surface used to relate geometric GNSS heights to physically meaningful elevations.
History & use
NOAA develops geoid models using gravity observations and validates them with GNSS and leveling.
Modern use
Modern use is context-dependent and varies by region or measurement system.