Geodesy, engineering survey, topographic mapping.
Combined adjustment of astro-geodetic observations as used for Xian 1980 and GPS control network observed 2000-2003. Adopted July 2008.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "China 2000", "ellipsoid": { "name": "CGCS2000", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 }, "scope": "Geodesy, engineering survey, topographic mapping.", "area": "China - onshore and offshore.", "bbox": { "south_latitude": 16.7, "west_longitude": 73.62, "north_latitude": 53.56, "east_longitude": 134.77 }, "id": { "authority": "EPSG", "code": 1043 } }