• Thumbnail for International Terrestrial Reference System and Frame
    The International Terrestrial Reference System (ITRS) describes procedures for creating reference frames suitable for use with measurements on or near...
    9 KB (763 words) - 09:20, 15 August 2023
  • 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 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
  • 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 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 IERS Reference Meridian
    versions, the ideal International Terrestrial Reference System (ITRS) and its realization, the International Terrestrial Reference Frame (ITRF). The most...
    13 KB (767 words) - 19:40, 26 March 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 datum
    systems, especially the World Geodetic System (WGS 84) used in the U.S. global positioning system (GPS), and the International Terrestrial Reference System...
    29 KB (3,073 words) - 16:06, 31 December 2023
  • defined the IERS Reference Meridian, the International Terrestrial Reference System (ITRS), and subsequent International Terrestrial Reference Frames (ITRF)...
    6 KB (553 words) - 18:36, 13 September 2023
  • Thumbnail for Earth-centered, Earth-fixed coordinate system
    2021. Snay, Richard A.; Soler, Tomás (December 1999). "Modern Terrestrial Reference Systems (Part 1)" (PDF). Professional Surveyor. "Polar motion". Archived...
    9 KB (904 words) - 13:39, 7 January 2024