EPSG
NIMA TR8350.2 June 2004 revision. http://earth-info.nga.mil/GandG/publications/tr8350.2/tr8350_2.html and http://gis-lab.info/docs/nima-tr8350.2-addendum.pdf. Also NGA.STND.0036_1.0.0_WGS84 of 2014-07-08.
2021-09-23
Satellite navigation.
EPSG::6326 has been the then current realization. No distinction is made between the original and subsequent (G730, G873, G1150, G1674, G1762 and G2139) WGS 84 frames. Since 1997, WGS 84 has been maintained within 10cm of the then current ITRF.
Definition: OGC Well Known Text 2 (2019)
ENSEMBLE["World Geodetic System 1984 ensemble", MEMBER["World Geodetic System 1984 (Transit)", ID["EPSG",1166]], MEMBER["World Geodetic System 1984 (G730)", ID["EPSG",1152]], MEMBER["World Geodetic System 1984 (G873)", ID["EPSG",1153]], MEMBER["World Geodetic System 1984 (G1150)", ID["EPSG",1154]], MEMBER["World Geodetic System 1984 (G1674)", ID["EPSG",1155]], MEMBER["World Geodetic System 1984 (G1762)", ID["EPSG",1156]], MEMBER["World Geodetic System 1984 (G2139)", ID["EPSG",1309]], ELLIPSOID["WGS 84",6378137,298.257223563, LENGTHUNIT["metre",1], ID["EPSG",7030]], ENSEMBLEACCURACY[2.0], ID["EPSG",6326]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "DatumEnsemble", "name": "World Geodetic System 1984 ensemble", "members": [ { "name": "World Geodetic System 1984 (Transit)", "id": { "authority": "EPSG", "code": 1166 } }, { "name": "World Geodetic System 1984 (G730)", "id": { "authority": "EPSG", "code": 1152 } }, { "name": "World Geodetic System 1984 (G873)", "id": { "authority": "EPSG", "code": 1153 } }, { "name": "World Geodetic System 1984 (G1150)", "id": { "authority": "EPSG", "code": 1154 } }, { "name": "World Geodetic System 1984 (G1674)", "id": { "authority": "EPSG", "code": 1155 } }, { "name": "World Geodetic System 1984 (G1762)", "id": { "authority": "EPSG", "code": 1156 } }, { "name": "World Geodetic System 1984 (G2139)", "id": { "authority": "EPSG", "code": 1309 } } ], "ellipsoid": { "name": "WGS 84", "semi_major_axis": 6378137, "inverse_flattening": 298.257223563 }, "accuracy": "2.0", "id": { "authority": "EPSG", "code": 6326 } }