The Institute of Geodesy and Geoinformatics of the University of Life Sciences in Wrocław has launched a network of permanent Global Navigation Satellite Systems (GNSS) as part of the EPOS-PL project – European Observation System.

GNSS receivers allow to determine the position of the station on the basis of satellite signals with an accuracy of a few millimeters and can be used to study vibration measurements of the Earth’s crust during seismic shocks and mining bumps.

The network consists of stations located in Wrocław, Katowice, Będzin, Chorzów, Chełm Śląski, Rybnik, Borowa Góra near Warsaw and in Komorniki near Środa Śląska. GNSS stations perform continuous autonomous observations of satellite signals from five navigation systems: US GPS; Russian GLONASS; the European Galileo system; Chinese BeiDou and Japanese QZSS.
More: http://www.glos.upwr.edu.pl/aktualnosci/48638/instytut_geodezji_i_geoinformatyki_i_siec_stacji_gnss.html