Geodesy. Navigation and positioning using GPS satellite system.
The NSWC 9Z-2 origin shifted by -4.5 m along the Z-axis, scale changed by -0.6 x 10E-6 and the reference meridian rotated westward by 0.814" to be aligned to the BTS at epoch 1984.0. Replaced by World Geodetic System 1984 (G730) from 1994-06-29.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "DynamicGeodeticReferenceFrame", "name": "World Geodetic System 1984 (Transit)", "frame_reference_epoch": 1984, "ellipsoid": { "name": "WGS 84", "semi_major_axis": 6378137, "inverse_flattening": 298.257223563 }, "scope": "Geodesy. Navigation and positioning using GPS satellite system.", "area": "World.", "bbox": { "south_latitude": -90, "west_longitude": -180, "north_latitude": 90, "east_longitude": 180 }, "id": { "authority": "EPSG", "code": 1166 } }