A Geodetic Datum is an adjustment to position of origin and shape of the planet, used by cartographers and satellite navigation systems to translate positions indicated on their products to their real position on earth. Examples of common Geodetic Datums are: * World Geodetic System 1984 (WGS84) - the datum of GPS * Ordnance Survey of Great Britain 1936 (OSGB36) - the usual datum of Britain nautical charts and Ordnance Survey maps until 2001 The difference between WGS84 and OSGB36 is 140 metres / 450 feet, which for most navigational purposes is an insignificant error. For other applications, such as surveying and dive site location for SCUBA divers, 140 metres is an unacceptably large error. Cartography Navigation
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Words begining with Geodetic_datum:
Geodetic_datum
Geodetic datum
A Geodetic Datum is an adjustment to position of origin and shape of the planet, used by cartographers and satellite navigation systems to translate positions indicated on their products to their real position on earth. Examples of common Geodetic Datums are: * World Geodetic System 1984 (WGS84) - the datum of GPS * Ordnance Survey of Great Britain 1936 (OSGB36) - the usual datum of Britain nautical charts and Ordnance Survey maps until 2001 The difference between WGS84 and OSGB36 is 140 metres / 450 feet, which for most navigational purposes is an insignificant error. For other applications, such as surveying and dive site location for SCUBA divers, 140 metres is an unacceptably large error. Cartography Navigation
See other meanings of words starting from letter:
G
GA | GB | GC | GD | GE | GF | GH | GI | GJ | GK | GL | GM | GN | GO | GP | GR | GS | GT | GU | GW | GX | GY | GZ |Words begining with Geodetic_datum:
Geodetic_datum
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