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4 Datum topics matching:
Filter this Collection| x name | x image | x Ellipsoid | x article |
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| x North American Datum of 1927 |
The North American Datum is the official datum used for the primary geodetic network in North America. In the fields of cartography and land-use there are currently two North American Datums in use: the North American Datum of 1927 (NAD27) and the...
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| x North American Vertical Datum of 1988 |
The North American Vertical Datum of 1988 (NAVD 88) is the vertical control datum established for vertical control surveying in the United States of America based upon the General Adjustment of the North American Datum of 1988.
The NAVD 88 was...
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| x North American Datum of 1983 | GRS 80 |
As satellite and remote sensing technology both improved and were made available for civilian applications, it became obvious that the NAD-27's appromixations were not sufficiently accurate. The North American Datum of 1983 was created to meet...
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| x WGS 84 | WGS 84 |
The latest revision of the World Geodetic System (dating from 1984 and last revised in 2004), which will be valid up to about 2010. Earlier schemes included WGS 72, WGS 66, and WGS 60. WGS 84 is the reference coordinate system used by the Global...
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