Spatial reference system
| It has been suggested that SRID be merged into this article or section. (Discuss) Proposed since March 2011. |
 | This article does not cite any references or sources. (December 2009) |
| Geodesy | |
|---|---|
| 68px | |
| Fundamentals | |
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Geodesy · Geodynamics Geomatics · Cartography | |
| Concepts | |
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Datum · Distance · Geoid Figure of the Earth Geodetic system Geog. coord. system Hor. pos. representation Map projection Reference ellipsoid Satellite geodesy Spatial reference system | |
| Technologies | |
| GNSS · GPS · GLONASS | |
| Standards | |
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ED50 · ETRS89 · GRS 80 NAD83 · NAVD88 · SAD69 SRID · UTM · WGS84 | |
| History | |
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History of geodesy NAVD29 | |
A spatial reference system (SRS) or coordinate reference system (CRS) is a coordinate-based local, regional or global system used to locate geographical entities. A spatial reference system defines a specific map projection, as well as transformations between different spatial reference systems. Spatial reference systems are defined by the OGC's Simple feature access using well-known text, and support has been implemented by several standards-based geographic information systems. Spatial reference systems can be referred to using a SRID integer, including EPSG codes defined by the International Association of Oil and Gas Producers.
Some of systems in existence are:
- Universal Transverse Mercator coordinate system
- British national grid reference system
- Hellenic Geodetic Reference System 1987
- Irish grid reference system
- Irish Transverse Mercator
- Israeli Transverse Mercator
- Israeli Cassini Soldner
- Jordan Transverse Mercator
- Military grid reference system
- United States National Grid
See also
External links
- spatialreference.org – A website that defines spatial reference systems, in a variety of formats.
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