Geodesy
science of the geometric shape, orientation in space, and gravitational field of Earth
Geodesy, sometimes called geodetics, is a scientific branch of geography which accurately measures the surface of the Earth.
| Geodesy | |
|---|---|
 | |
| Fundamentals | |
| Geodesy · Geodynamics Geomatics · Cartography | |
| Concepts | |
| Datum · Distance · Geoid Figure of the Earth Geodetic system Geog. coord. system Hor. pos. representation Map projection Reference ellipsoid Satellite geodesy Spatial reference system | |
| Technologies | |
| GNSS · GPS · GLONASS | |
| Standards | |
| ED50 · ETRS89 · NAD83 NAVD88 · SAD69 · SRID UTM · WGS84 | |
| History | |
| History of geodesy NAVD29 | |
Friedrich Robert Helmert (1843–1917), who started the discipline, talked about measuring and mapping the surface of the earth. This includes its geometric description (the geoid) and the measurement and description of its gravitational field.
Some people involved in the discipline look at geodynamics, the crusts, the tides, or the movement of the geographical poles.
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