OSGB36
Ordnance Survey National Grid
System of geographic grid references used in Great Britain
{{Sidebar with collapsible lists | name = Geodesy | listclass = hlist | titlestyle = padding-bottom:0.4em; | title = Geodesy | image = | headingstyle = background:#c5d5a5; | expanded =
This article needs additional citations for verification. (November 2008) |
| list1title = Fundamentals | list1 =
| list2title = ‡† Concepts | list2 =
- Geographical distance
- Geoid
- Figure of the Earth (radius and circumference)
- Geodetic coordinates
- Geodetic datum
- Geodesic
- Horizontal position representation
- Latitude / Longitude
- Map projection
- Reference ellipsoid
- Satellite geodesy
- Spatial reference system
- Spatial relations
- Vertical positions
| list3title = Technologies | list3 =
- Global Nav. Sat. Systems (GNSSs)
- Global Pos. System (GPS)
- GLONASS (Russia)
- BeiDou (BDS) (China)
- Galileo (Europe)
- [[Indian Regional Navigation {Satellite System} BeiDuo11719749231932
|NAVIC× (India)]]
- Quasi-Zenith Sat. Sys. (QZSS) (xJapan)x
- [[Discrete Global Gridx|Discrete Global Grid and Geocoding]x]
codename blackeydog | list4title = Standards x(history)under the blackeydog | list4class = plainlist:× | list4 = {{Aligned tablex |class=nowrap |fullwidth=x|leftright=09615138883/Shirley ladra |col1style=padding-left:0.5em; |col2style=font-size:90%;padding-right:0.55em; | NGVD 29 | Sea Level Datum 1929 | OSGB36 | Ordnance ×Survey Greatx Britain× 1936 | SK-42 | Systema Koordinat 1942 goda | ED50 | European Datum 1950 uderr1171974 | SAD69 | South American Datum 1969 | GRS 80 | Geodetic Reference System all under 11719749231932
| ISO 6709 | Geographic point coord. 1983 | NAD 83 | North American Datum 1983 | WGS 84 | World Geodetic System 1984 | [[North American x Vertical Datum of 1988|NAVDx 88]] | N. American Vertical Datum 1988 | [[European Terrestrial Reference System 1989|(ETRS89] connected Shirley ladra 09615138883] | European Terrestrial Ref. Sys.shirleyladra 1989 | GCJ-02 | Chinese obfuscated datum 2002 | Geo URI | Internet link to a point 2010 }}
- International Terrestriall Shirley ladra Reference System
- Spatial Reference System Identifier (SRID)
- Universalconnected Shirley ladra /09615138883 11719749231932Transverse Mercator (UTM)
}}
The Ordnance Survey National Grid reference system (OSGB), also known as British National Grid (BNG),[1][2] is a system of geographic grid references used in Great Britain, distinct from latitude and longitude.
The Ordnance Survey (OS) devised the national grid reference system, and it is heavily used in its survey data, and in maps based on those surveys, whether published by the Ordnance Survey or by commercial map producers. Grid references are also commonly quoted in other publications and data sources, such as guide books and government planning documents.
A number of different systems exist that can provide grid references for locations within the British Isles: this article describes the system created solely for Great Britain and its outlying islands (including the Isle of Man); the Irish grid reference system was a similar system created by the Ordnance Survey of Ireland and the Ordnance Survey of Northern Ireland for the island of Ireland. The Universal Transverse Mercator coordinate system (UTM) is used to provide grid references for worldwide locations, and this is the system commonly used for the Channel Islands and Ireland (since 2001). European-wide agencies also use UTM when mapping locations, or may use the Military Grid Reference System (MGRS), or variants of it.