geodesy
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AI overview
Geodesy is the science of measuring and mapping Earth's shape, size, and physical features with high precision. It matters because accurate geodetic data is essential for everything from creating reliable maps and managing land boundaries to supporting satellite technology and understanding how our planet is changing over time.
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Article
18 sectionsContents
- History
- Definition
- Geoid and reference ellipsoid
- Coordinate systems in space
- Coordinate systems in the plane
- Heights
- Geodetic datums
- Positioning
- Geodetic problems {{anchor|Problems}}
- Observational concepts
- Measurements
- Units and measures on the ellipsoid
- Temporal changes
- Notable geodesists
- See also
- References
- Further reading
- External links
thumb|upright=1.05|A modern instrument for geodetic measurements using satellites
Geodesy (, ) or geodetics is the science of measuring and representing the geometry, gravity, and spatial orientation of the Earth in temporally varying 3D space. It is called planetary geodesy when studying other astronomical bodies, such as planets or circumplanetary systems. Geodetic job titles include geodesist and geodetic surveyor.