New National Survey LV95

In the period from 1988 to 1995 the Federal Office of Topography swisstopo developed a new national surveying system that is largely based on GNSS technology. Please also refer to the “New coordinates” page. The new national survey, called LV95, replaces the 100-year-old national survey (LV03), based on triangulation. The fundamental point for LV95 is the geostation in Zimmerwald, near Bern.

The new national survey is connected to two new reference systems:

CHTRS95

The CHTRS95 global system is connected to the international and European reference systems. It includes a kinematic model and is suitable for scientific applications and demanding engineering projects.

CH1903+

The local reference system, CH1903+, is static and offers an ideal reference frame for the official cadastral survey. By connecting observations to the old national survey, the data from the still official reference system, CH1903, can be transformed into the new system, CH1903+.

As of 1988, the basic network was built up in smaller networks and determined with a high accuracy using GPS. Within the next few years, this control network should meet practically all surveying requirements in Switzerland. It consists of approx. 210 carefully chosen geodetic control points and will be densified according to need. The "absolute" accuracy of the coordinates is within 0.5 to 1 centimetre for the horizontal component, and 2 to 3 centimetres for the ellipsoidal height (notation of coordinates: E=2 600 000 m / N=1 200 000 m).


Federal Office of Topography swisstopo Seftigenstrasse 264
P.O. Box
3084 Wabern
Tel.
+41 58 469 01 11

E-mail


Relevant authority

Geodesy and Federal Directorate of Cadastral Surveying
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Print contact

Federal Office of Topography swisstopo

Seftigenstrasse 264
P.O. Box
3084 Wabern

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