ESTPOS - national GNSS satellite data center

ESTPOS is the national GNSS or Global Navigation Satellite System satellite data center. ESTPOS reference station network consists of 37 GNSS reference stations (as of 09.01.2025) evenly covering Estonia. ESTPOS network is necessary for the monitoring of the Estonian geodetic reference system and its components. In addition, ESTPOS ensures accessibility to precise location-based information throughout Estonia and also supports real-time GNSS measurements with an accuracy of 2-5 cm.

The short-term (last 90 days) observation data of ESTPOS reference stations are available via ESTPOS user portal. Older observation data are archived in the Land and Spatial Development Board and can be made available to the users based on their needs. In addition to downloading the observation data of ESTPOS reference stations it is also possible to do GNSS computations and coordinate transformations in the ESTPOS user portal. Access to ESTPOS real-time correction data is also made available through the ESTPOS user portal.

ESTPOS GNSS reference stations and their data are involved in many international projects. Four ESTPOS GNSS reference stations belong to the EPN (EUREF Permanent GNSS Network) and all ESTPOS reference stations to the EPOS (European Plate Observing System) network. The data of ESTPOS GNSS reference stations are used in the working groups of NKG (Nordic Geodetic Commission) and EUREF (Reference Frame Sub Commission for Europe).

According to the directive nr 1-1/25/7, of the Director General of Land and Spatial Development Board, ESTPOS services "RINEX ja Virtual RINEX andmed" and "Arvutusteenus ja Transformeerimine" are free to use for everyone for a test period until 31.12.2025. Based on the same directive the ESTPOS service "RTK parandid" will also be free to use for everyone for a test period of 01.04.2025 to 30.09.2025. To use ESTPOS services a ESTPOS user portal account must be created and the ESTPOS contract must be signed. After ESTPOS user support has received the signed contract access to selected ESTPOS services will be made available to the user.