Space geodesy

Fundamentals

Concepts

Technologies

Standards

ED50	European Datum 1950
SAD69	South American Datum 1969
GRS 80	Geodetic Reference System 1980
NAD83	North American Datum 1983
WGS84	World Geodetic System 1984
NAVD88	N. American Vertical Datum 1988
ETRS89	European Terrestrial Reference System 1989
GCJ-02	Chinese encrypted datum 2002

Space geodesy is geodesy by means of sources external to Earth, mainly artificial satellites (in satellite geodesy) but also quasars (in very-long-baseline interferometry, VLBI) and the retroreflectors on the Moon (in lunar laser ranging, LLR).

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