![]() ![]() The WGS 84 meridian of zero longitude is the IERS Reference Meridian, 5.3 arc seconds or 102 metres (335 ft) east of the Greenwich meridian at the latitude of the Royal Observatory. 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). EPSG:4326 for 2D coordinate reference system (CRS),.The latest revision is WGS 84 (also known as WGS 1984 ensemble): ![]() This standard includes the definition of the coordinate system's fundamental and derived constants, the normal gravity Earth Gravitational Model (EGM), a description of the associated World Magnetic Model (WMM), and a current list of local datum transformations. The copy-paste of the page "3D Coordinates Systems" or any of its results, is allowed as long as you cite dCode!Ĭite as source (bibliography): 3D Coordinates Systems on dCode.The World Geodetic System ( WGS) is a standard for use in cartography, geodesy, and satellite navigation including GPS. Except explicit open source licence (indicated Creative Commons / free), the "3D Coordinates Systems" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or the "3D Coordinates Systems" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, or API access for "3D Coordinates Systems" are not public, same for offline use on PC, mobile, tablet, iPhone or Android app! From cylindrical coordinates $ (r,\theta^*,z) $ the base / referential change to spherical coordinates $ (\rho,\theta,\varphi) $ follows the equations: $$ \rho = \sqrt \right) \\ \varphi = \theta^* $$ Ask a new question Source codeĭCode retains ownership of the "3D Coordinates Systems" source code. ![]()
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