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Published on 8 January 2024

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 Geodesy and Federal Directorate of Cadastral Surveying
Seftigenstrasse 264
3084 Wabern