国家2000坐标系CGCS2000（EPSG4490和EPSG4479）参数 |
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EPSG：4490
China Geodetic Coordinate System 2000 (CGCS2000)经纬度坐标系
Unit: degree (supplier to define representation) Geodetic CRS: China Geodetic Coordinate System 2000 Datum: China 2000 Ellipsoid: CGCS2000 Prime meridian: Greenwich Data source: OGP Information source: EPSG. See 3D CRS for original information source. Revision date: 2012-01-05 Scope: Horizontal component of 3D system. Remarks: Adopted July 2008. Replaces Xian 1980 (CRS code 4610). Area of use: China - onshore and offshore. Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree Center coordinates 104.19500000 35.13000000 WGS84 bounds: 73.62 16.7 134.77 53.56 Well Known Text (WKT)： GEOGCS["China Geodetic Coordinate System 2000", DATUM["China_2000", SPHEROID["CGCS2000",6378137,298.257222101, AUTHORITY["EPSG","1024"]], AUTHORITY["EPSG","1043"]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4490"]] EPSG：4479 China Geodetic Coordinate System 2000 (CGCS2000)平面坐标系Unit: metre Geodetic CRS: China Geodetic Coordinate System 2000 Datum: China 2000 Ellipsoid: CGCS2000 Prime meridian: Greenwich Data source: OGP Information source: Chinese Academy of Surveying and Mapping. Revision date: 2012-01-05 Scope: Geodetic survey. Area of use: China - onshore and offshore. Coordinate system: Earth centred, earth fixed, righthanded 3D coordinate system, consisting of 3 orthogonal axes with X and Y axes in the equatorial plane, positive Z-axis parallel to mean earth rotation axis and pointing towards North Pole. UoM: m. Center coordinates -1280587.98 5062692.16 Projected bounds: 1723289.26 5862789.57 -2673890.41 2695444.42 WGS84 bounds: 73.62 16.7 134.77 53.56 Well Known Text (WKT)： GEOCCS["China Geodetic Coordinate System 2000", DATUM["China_2000", SPHEROID["CGCS2000",6378137,298.257222101, AUTHORITY["EPSG","1024"]], AUTHORITY["EPSG","1043"]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Geocentric X",OTHER], AXIS["Geocentric Y",OTHER], AXIS["Geocentric Z",NORTH], AUTHORITY["EPSG","4479"]]参考： 1、http://epsg.io/4490 2、https://epsg.io/4479 |
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