The coordinate origin of WGS 84 is meant to be located at the Earth's center of mass the uncertainty is believed to be less than 2 cm. G1762’ was the first time IGS14 was used. Not all frame realisations (such as G1762’, 29 January 2017, GPS week 1934) are in EPSG under WGS 84, but under IGS14. and this ellipsoid is located a standard horizontal datum, named urn:ogc:def:datum:EPSG::6326.a standard reference ellipsoid model, named urn:ogc:def:ellipsoid:EPSG::7030.WGS 84 is the reference coordinate system used by the Global Positioning System.Īs CRS standard, and expressing by URN, urn:ogc:def:crs:EPSG::4326, it is composed of: Earlier schemes included WGS 72, WGS 66, and WGS 60. WGS 84 ensemble is static, while frame realisations have an epoch. It is established and maintained by the United States National Geospatial-Intelligence Agency since 1984, and last revised in January 2021 ( G2139 frame realization).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |