• Thumbnail for European Terrestrial Reference System 1989
    The European Terrestrial Reference System 1989 (ETRS89) is an ECEF (Earth-Centered, Earth-Fixed) geodetic Cartesian reference frame, in which the Eurasian...
    6 KB (585 words) - 18:43, 20 March 2024
  • Thumbnail for Universal Transverse Mercator coordinate system
    '\tan \xi '\tanh \eta '}}\right).} European Terrestrial Reference System 1989 (ETRS89) Military grid reference system, a variant of UTM designed to simplify...
    17 KB (2,610 words) - 23:05, 29 February 2024
  • Thumbnail for World Geodetic System
    datum Degree Confluence Project Earth Gravitational Model European Terrestrial Reference System 1989 Geo (microformat) – for marking up WGS 84 coordinates...
    24 KB (2,809 words) - 05:56, 18 March 2024
  • of EUREF and a backbone in the maintenance of the European Terrestrial Reference System 1989. European Combined Geodetic Network (ECGN) is a research project...
    6 KB (566 words) - 02:32, 20 July 2023
  • Thumbnail for Spatial reference system
    A spatial reference system (SRS) or coordinate reference system (CRS) is a framework used to precisely measure locations on the surface of Earth as coordinates...
    15 KB (1,546 words) - 22:10, 9 April 2024
  • Thumbnail for Military Grid Reference System
    The Military Grid Reference System (MGRS) is the geocoordinate standard used by NATO militaries for locating points on Earth. The MGRS is derived from...
    15 KB (2,133 words) - 06:55, 13 February 2024
  • Thumbnail for Geodetic Reference System 1980
    The Geodetic Reference System 1980 (GRS80) is a geodetic reference system consisting of a global reference ellipsoid and a normal gravity model. Geodesy...
    7 KB (945 words) - 05:26, 28 September 2023
  • Thumbnail for Hellenic Geodetic Reference System 1987
    (HEPOS) project, is GPS based and is compatible with European Terrestrial Reference System 1989 (ETRS89). HTRS07 is currently used for the cadastral surveys...
    7 KB (827 words) - 10:07, 15 December 2023
  • Thumbnail for IERS Reference Meridian
    versions, the ideal International Terrestrial Reference System (ITRS) and its realization, the International Terrestrial Reference Frame (ITRF). The most important...
    13 KB (767 words) - 19:40, 26 March 2024
  • Thumbnail for National Spatial Reference System
    Satellite Systems (GNSS) and geoid use. It will use the following four frames of reference, each representing a tectonic plate: North American Terrestrial Reference...
    6 KB (555 words) - 16:13, 16 April 2024