bn:14369528n
Noun Concept
Categories: Vertical datums
EN
vertical datum  reference height  altimetric datum  height datum  height system
EN
In geodesy, surveying, hydrography and navigation, vertical datum or altimetric datum, is a reference coordinate surface used for vertical positions, such as the elevations of Earth-bound features and altitudes of satellite orbits and in aviation. Wikipedia
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EN
In geodesy, surveying, hydrography and navigation, vertical datum or altimetric datum, is a reference coordinate surface used for vertical positions, such as the elevations of Earth-bound features and altitudes of satellite orbits and in aviation. Wikipedia
reference surface for vertical positions Wikidata