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.

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Global navigation satellite systems

The abbreviation GNSS refers to the use of the various existing and future global navigation satellite systems, including:

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Federal Office of Topography swisstopo

Division Geodesy and Federal Directorate of Cadastral Surveying
Seftigenstrasse 264
3084 Wabern