Geodetic Point
A permanently marked point with precisely determined coordinates that serves as a reference point for surveying work.
A geodetic point is a permanently marked point in the field with precisely determined coordinates and/or height. Geodetic points form the national geodetic network and serve as the basis for all surveying and cartographic work.
Types of geodetic points:
- Triangulation points - historically the first geodetic points, determined by angle measurement methods
- Traverse points - denser network in cities and populated areas
- Leveling points (benchmarks) - points with precisely determined height
- GNSS permanent stations - modern highest precision points
Latvian geodetic network:
The Latvian state geodetic network is maintained and managed by the Latvian Geospatial Information Agency (LGIA). The network includes:
- Approximately 5,000 horizontal coordinate points
- More than 6,000 leveling points
- LatPos base station network for real-time measurements
Protection of geodetic points:
Geodetic points are state property and protected by law. Their damage or destruction is administratively punishable. Property owners on whose land geodetic points are located must provide access and protection.
Use of points in surveying:
Surveyors use geodetic points to:
- Orient measurement instruments
- Check measurement accuracy
- Connect new measurements to the national coordinate system
- Perform control measurements
Information about geodetic points is available in the LGIA database and is used by surveyors in their daily work.