Satellite-based surveying
Modern national surveying is based on signals from global navigation satellites.
GNSS observation procedures
Satellite measurement technology works with an accuracy range of within a metre. To achieve accuracy in the centimetre range, differential methods are applied.
Global navigation satellite systems
The abbreviation GNSS refers to the use of the various existing and future global navigation satellite systems, including:
Federal Office of Topography swisstopo
Division Survey
Seftigenstrasse 264
3084 Wabern
Seftigenstrasse 264
3084 Wabern