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Space geodesy

Standards (history)

NGVD 29	Sea Level Datum 1929
OSGB36	Ordnance Survey Great Britain 1936
SK-42	Systema Koordinat 1942 goda
ED50	European Datum 1950
SAD69	South American Datum 1969
GRS 80	Geodetic Reference System 1980
ISO 6709	Geographic point coord. 1983
NAD 83	North American Datum 1983
WGS 84	World Geodetic System 1984
NAVD 88	N. American Vertical Datum 1988
ETRS89	European Terrestrial Ref. Sys. 1989
GCJ-02	Chinese obfuscated datum 2002
Geo URI	Internet link to a point 2010

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), visible stars (in stellar triangulation), and the retroreflectors on the Moon (in lunar laser ranging, LLR).

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空间大地测量学 Chinese

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