Ellipsoidal Height or Geodetic Height (glossary)
Ellipsoidal height, also known as geodetic height h, is the distance of a point from the reference ellipsoid along the perpendicular from the reference ellipsoid to this point, positive if upwards or outside of the reference ellipsoid.
Notes to Entry:
- Only used as part of a three-dimensional ellipsoidal coordinate system or as part of a three-dimensional Cartesian coordinate system in a three-dimensional projected coordinate reference system, but never on its own.
- Ellipsoidal height and geodetic height are registered with the ISO as two separate terms, but in practice are frequently used synonymously.
ISO TC211. "Ellipsoidal height." In: ISO TC211 Multilingual Glossary. Version from 2020-06-02. Concept ID: 2406. Available at: https://isotc211.geolexica.org/concepts/2406/.