The North American Datum (NAD) is the horizontal datum now used to define the geodetic network in North America. A datum is a formal description of the...

States of America based upon the General Adjustment of the North American Datum of 1988. It superseded the National Geodetic Vertical Datum of 1929 (NGVD...

geodetic datum or geodetic system (also: geodetic reference datum, geodetic reference system, or geodetic reference frame) is a global datum reference...

Vertical Datum of 1929 is the official name since 1973 of the vertical datum established for vertical control surveying in the United States of America by the...

The South American Datum (SAD) is a regional historical geodetic datum for South America. The most common version was established in 1969 (SAD69), as adopted...

Reference System (NSRS). It will replace the North American Datum of 1983 (NAD 83) and the North American Vertical Datum of 1988 (NAVD 88) with a new geometric...

the large geodetic systems, such as European Datum (ED50), North American Datum (NAD), and Tokyo Datum (TD), to provide a worldwide geo-data basis Need...

example, data in latitude/longitude if the datum is the North American Datum of 1983 is denoted by 'GCS North American 1983'. On the GRS 80 or WGS 84 spheroid...

professionals include the National Geodetic Vertical Datum of 1929 and the North American Vertical Datum of 1988. In common usage, elevations are often cited...

geodetic datum. In 1913, the datum was adopted across all of North America, and the system revised and formalized as the North American Datum of 1927 (NAD27)...

Examples include the World Geodetic System and the 1927 and 1983 North American Datum. A datum generally consists of an estimate of the shape of the Earth...

ED50 ("European Datum 1950", EPSG:4230) is a geodetic datum which was defined after World War II for the international connection of geodetic networks...

from the geographical 49th parallel for the currently adopted datum, the North American Datum of 1983 (NAD 83). The Digital Chart of the World (DCW), which...

referenced to the same geodetic datum. A geographic coordinate transformation is a translation among different geodetic datums. Both geographic coordinate...

geodetic datum to be used for mapping and surveying purposes in Europe. It plays the same role for Europe as NAD-83 for North America. (NAD-83 is a datum in...

Moscow. It is used in Australia for the Australian Geodetic Datum and in the South American Datum 1969. The GRS-80 (Geodetic Reference System 1980) as approved...

Eratosthenes, by comparing altitudes of the mid-day sun at two places a known north–south distance apart. He achieved a great degree of precision in his computation...

(vertical). These regional geodetic datums, such as ED 50 (European Datum 1950) or NAD 27 (North American Datum 1927), have ellipsoids associated with...

data in latitude/longitude if the datum is the 'North American Datum of 1983' is denoted by 'GCS North American 1983'. While no digital model can be...

means current UTM northing at a given point can differ up to 200 meters from the old. For different geographic regions, other datum systems can be used...

2010. ECEF datum transformation Archived March 22, 2007, at the Wayback Machine Notes on converting ECEF coordinates to WGS-84 datum Datum Transformations...

is greater than that of the north, which is corroborated by the South Pole's sea level being lower than that of the north. A pear-shaped Earth had first...

1927 North American Datum (NAD27); conversion or a change in settings is necessary when using a GPS which by default employ the WGS84 geodetic datum. Beginning...

is used for WGS84 and some other modern geodetic datums, the letter for the first row – just north of the equator – is A in odd-numbered zones, and F...

Parameter Dataset (also EPSG registry) is a public registry of geodetic datums, spatial reference systems, Earth ellipsoids, coordinate transformations...

needed] Datum: OSGB36 Map projection: Transverse Mercator projection using Redfearn series True origin: 49°N, 2°W False origin: 400 km west, 100 km north of...

introduced in English-speaking countries, the basic geodetic datum in America was the North American Datum of 1927 (NAD27). This had been constructed by triangulation...

“area-centric” counterpart to the “point-centric” MGRS". It uses the WGS 1984 Datum and is based on lines of longitude (LONG) and latitude (LAT). It is intended...

harmonics generated with better data. Deflection of the vertical Geodetic datum Geopotential International Terrestrial Reference Frame Physical geodesy...

Geographic point coord. 1983 NAD 83 North American Datum 1983 WGS 84 World Geodetic System 1984 NAVD 88 N. American Vertical Datum 1988 ETRS89 European Terrestrial...