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WGS84 - the CRS of GPS under construction Earth Geodetic Reference System GNSS
World Geodetic System 1984 (WGS84)
The geodetic reference system of the Global Positioning System GPS.
It is a geocentred WGS84 ellipsoid of revolution.
World Geodetic System 1984 at NGA (DoD)
WGS 84 Earth Gravitational Model
GPS - Global Positionning System
The GPS Site of Peter H. Dana - The Geographers Craft
World Geodetic System 1984 at NGA (DoD) Earth Geodetic Reference System www GNSS
graphic08.05.2007
The official and original description of the WGS84 geodetic reference system:
  "Department of Defense World Geodetic System 1984, Its Definition and Relationships With  Local Geodetic Systems" -  Techncal Report TR8350.2
related information
World Geodetic System 1984 at NGA (DoD)
WGS 84 Earth Gravitational Model Earth Geodetic Reference System www
graphic27.01.2012
different Earth Gravitational Models (EGM) for WGS84 are built up:
related information
http://earth-info.nga.mil/GandG/wgs84/gravitymod/index.html
GPS - Global Positionning System Earth www
graphic10.05.2007
A Global Navigation Satellite System (GNSS) which is funded by and controlled by the U. S. Department of Defense (DoD).
related information
Global Positioning System at NGA (DoD)
The GPS Site of Peter H. Dana - The Geographers Craft Earth www
graphic10.05.2007
A comprehensive site about GPS.
related information
The GPS Site of Peter H. Dana
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