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[DOC File]quaff - U.S. National Geodetic Survey
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The GPS coordinate system is the Cartesian earth-centered earth-fixed coordinates as specified in the World Geodetic System reference system 1984 (WGS-84). The GPS constellation of 24 satellites is designed so that a minimum of five is always observable by a user anywhere on earth.
wgs 84 coordinate system

World Geodetic System (WGS84) - GIS Geography
The standard reference system the World Geodetic System 1984 (WGS84) is applicable for the worldwide use by all applications used in meteorology, Most regional and national systems refer to WGS 84, The WGS 84 is endorsed by other international bodies, such as ICAO, The Earth Geodetic Model - EGM-96 is applicable for all applications in meteorology,
wgs 84 datum

[DOC File]EXERCISE 2-1
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WGS 84 (World Geodetic System of 1984). Reference ellipsoid and geodetic datum of GPS, defined and maintained by the US Department of Defense. Current realizations of WGS 84 are considered identical to ITRF 2000 at the 2 cm level. See National Imagery and Mapping Agency (2000) for details, and Merrigan et al. (2002) for information on the most ...
what is wgs 84

[DOC File]CGMS-39 WMO-WP-25
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The World Geodetic System (WGS) and Geomatics (WGSG) FG) is the advocate to manage the standardization of the WGS and activities. The WGSG FG defines and resolves interoperability and related standardization issues, and acts as a conduit for information and coordination as related to the WGS and the discipline of Geomatics.The WGS is a set of ...
world geodetic system 1984

[DOCX File]PREFACE - National Geospatial-Intelligence Agency
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2) The mathematical datum used for the Global Positioning System (GPS) is the World Geodetic System datum for 1984 (WGS-84). The standard physical datum, usually referenced to local mean sea level at the coastline, is the geoid (Fig. 2.2). Explain what is meant by a ‘datum’ and describe the general differences between WGS-84 and the geoid.
wgs 84 coordinates

World geodetic system