Datum of 2022

Geodesy

Fundamentals

* Geodesy
* Geodynamics
* Geomatics
* History

Concepts

* Geographical distance
* Geoid
* Figure of the Earth (Earth radius and Earth's circumference)
* Geodetic datum
* Geodesic
* Geographic coordinate system
* Horizontal position representation
* Latitude / Longitude
* Map projection
* Reference ellipsoid
* Satellite geodesy
* Spatial reference system
* Spatial relations

Technologies

* Global Nav. Sat. Systems (GNSSs)
* Global Pos. System (GPS)
* GLONASS (Russia)
* BeiDou (BDS) (China)
* Galileo (Europe)
* NAVIC (India)
* Quasi-Zenith Sat. Sys. (QZSS) (Japan)
* Discrete Global Grid and Geocoding

Standards (history)

|  NGVD 29|  Sea Level Datum 1929

|

OSGB36|  Ordnance Survey Great Britain 1936
SK-42|  Systema Koordinat 1942 goda
ED50|  European Datum 1950
SAD69|  South American Datum 1969
GRS 80|  Geodetic Reference System 1980
ISO 6709|  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 Ref. Sys. 1989
GCJ-02|  Chinese obfuscated datum 2002
Geo URI|  Internet link to a point 2010

* International Terrestrial Reference System
* Spatial Reference System Identifier (SRID)
* Universal Transverse Mercator (UTM)

* v
* t
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The Datum of 2022 is a placeholder name for a new geodetic datum set to be produced by the U.S. National Geodetic Survey in 2024-2025[1][2] to improve the National Spatial Reference System (NSRS) by replacing the North American Datum of 1983 (NAD 83) and the North American Vertical Datum of 1988 (NAVD 88) with a new geometric reference frame and geopotential datum.[3]

The new reference frames will rely primarily on Global Navigation Satellite Systems (GNSS), such as the Global Positioning System (GPS), as well as on a gravimetric geoid model resulting from NGS' Gravity for the Redefinition of the American Vertical Datum (GRAV-D) Project.

These new reference frames are intended be easier to access and to maintain than NAD 83 and NAVD 88, which rely on physical survey marks that deteriorate over time.[3]

## See also

* Altitude
* Geodesy
* Sea Level Datum of 1929
* Topographic elevation
* Topography
* Reference ellipsoid
* Geoid

## References

1. ↑ New Datums: Delayed Release
2. ↑ New Datums: FAQ
3. ↑ 3.0 3.1 New Datums: Replacing NAVD 88 and NAD 83

## External links

* "United States Geological Survey home page". http://www.usgs.gov/.
* "U.S. National Geodetic Survey home page". http://www.ngs.noaa.gov/.
* "Geodetic Glossary". United States National Geodetic Survey. http://www.ngs.noaa.gov/CORS-Proxy/Glossary/xml/NGS_Glossary.xml.
* "Orthometric Height Conversion tool". United States National Geodetic Survey. http://www.ngs.noaa.gov/cgi-bin/VERTCON/vert_con.prl.

attribution contains public domain material copied from https://www.ngs.noaa.gov/datums/newdatums/index.shtml

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