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Geodetic data

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Definitions Edit

Geodetic data is data used in geodesy, navigation, surveying by cartographers and satellite navigation systems to translate positions indicated on their products to their real position on earth.

Geodetic data "describe the size and shape of the earth and the position and elevation of points on the earth's surface."[1]

Overview Edit

Geodetic data is

1. A reference surface consisting of five quantities: the latitude and longitude of an initial point, the azimuth of a line from that point, and the parameters of the reference ellipsoid. 2. The mathematical model of the earth used to calculate the coordinates on any map. Different nations use different datum for printing coordinates on their maps. The datum is usually referenced in the marginal information of each map.[2]

References Edit

  1. Geographic Information Systems: Information on Federal Use and Coordination, at 17 n.b.
  2. U.S. Joint Chiefs of Staff, Joint Pub. 2-03: Geospatial Intelligence Support to Joint Operations, Glossary, at GL-5 (Mar. 22, 2007) (full-text).

See also Edit


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