The Liechtenstein national survey is based on the national survey of Switzerland. The Office of Civil Engineering and Geoinformation and the Federal Office of Topography swisstopo have concluded a cooperation agreement which obliges swisstopo, in cooperation with the Office of Civil Engineering and Geoinformation, to create and maintain the national survey on Liechtenstein territory in accordance with the same quality guidelines as in Switzerland. This ensures the availability of high-quality land surveying bases and products on Liechtenstein territory as well.

3-Dimensional reference systems and reference frameworks

In Liechtenstein, the following reference systems are used in particular:

• CH1903+: Reference system of the new national survey 1995 (LV95)
• CH1903: Reference system of the old national survey 1903
• CHTRS95: Swiss Terrestrial Reference System 1995

The old reference system CH1903 (reference system of the old national survey 1903, LV03) has since been largely replaced by LV95.

The LV95 frame of reference

The LV95 reference frame is the new basis for all surveying work to be carried out. LV95 guarantees the accuracy and reliability of coordinate determination even for surveying tasks using the latest methods and instruments, e.g. GPS or GNSS. The coordinate values in relation to LV95 are designated E (easting) or N (northing).

Control points of the national survey

A fixed point is a point permanently secured with a stone or a bolt (sometimes under a shaft) with known coordinates and/or known height. The fixed points form the basis of all data with a spatial reference.

An online map with all fixed points of the Liechtenstein National Survey can be found on the Swisstopo fixed point data service

Topographic Landscape Model Switzerland (TLM) also in Liechtenstein

The topographic landscape model is geodata that describes the shape and land cover of the earth's surface and its nomenclature in three dimensions.

The Office of Civil Engineering and Geoinformation and the Federal Office of Topography swisstopo have concluded an agreement that obliges swisstopo to create and maintain the TLM on Liechtenstein territory in accordance with the same quality guidelines as in Switzerland. The Office for Civil Engineering and Geoinformation provides swisstopo with the official cadastral survey data for the creation of the TLM. In return, the national administration receives a license for the full use of the TLM. In addition, the Civil Engineering and Geoinformation Office receives the distribution rights for the SWISSIMAGE orthophoto and the SwissALTI3D elevation model within Liechtenstein and for customers from Liechtenstein as part of this agreement.