GNSS augmentation system


System status
Connection configuration
NTRIP Caster: or
  • RTN port: 2101 or 8080
  • RTK port: 8086 for RTCM 3.4 or 8082, 8083 for RTCM 3.1
  • DGNSS port: 8081

From October 2, 2022, all ASG-EUPOS system services are available free of charge. Using all services of the ASG-EUPOS system is possible for registered users. 


Odbiornik do pomiarów GNSS RTN na tle placu budowy wiaduktu.


High accuracy real-time service. Network correction data.


High accuracy real-time service. Correction data from a single station.

Post-processing services

Services for calculating GNSS measurements in post-processing mode.


Real-time services with decimeter accuracy

About ASG-EUPOS system

The ASG-EUPOS system supports satellite measurements and navigation. The ASG-EUPOS system was launched by the Head Office of Geodesy and Cartography in 2008 as a modern solution enabling precise position determination using Global Navigation Satellite Systems.

The logo of the Central Office of Geodesy and Cartography showing the Earth's cartographic grid and the gray outline of Poland against the background of the Polish flag.

You need help?

If you have any questions or doubts, ASG-EUPOS administrators will help you solve your problem.

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