GNSS observations operated by Geodetic Observatory Pecny

GOPE - GNSS permanent station

  • 1993 (Sep 7) - the beginning of permanent GPS observations with the Trimble 4000 SSE receiver
  • 1995 - launch of regular GOPE contribution to IGS (International GNSS Service)
  • 1996 - GOPE included in EPN (EUREF Permanent Network)
  • 1999 (Nov 4) - Trimble receiver replaced by Ashtech Z18 and Ashtech Choke Ring GG antenna observing GPS and GLONASS signals
  • 2009 (Dec 14) - Ashtech Z18 receiver replaced by Topcon Net G3 and Topcon CR-G3 antenna with spherical radom.

Operation and data usage

The main purpose of permanent station GOPE is to supply GNSS data to the international scientific services (IGS, EPN) and projects as well as the user community to support

  • maintenance of the terrestrial reference systems (ITRS, ETRS89)
  • determination of coordinate time-series for GOPE – time variation in position and height
  • determination of precise GPS and GLONASS orbits
  • real-time determination of tropospheric parameters
  • determination of precise orbits of Low Earth Orbiters (LEO)
  • other applications requiring real-time data (DGPS, RTK) and precise post-processing applications (VESOG network and others).


The GOPE permanent GNSS station is continuously tracking GPS and GLONASS satellites. Two data types are produced - real-time and post-processing. Real-time data are disseminated via GOP broadcaster (http://ntrip.pecny.cz) using RTCM3 format and NTRIP streams. Post-processing data are transmitted in RINEX (v2.11) files. The file lengths are 15min(1s), 1hour(30s) and 1day(30s). The data are available in the EUREF regional data centre (BKG, http://igs.bkg.bund.de) and in the IGS global data centre (CDDIS, http://cddis.gsfc.nasa.gov/).


The data from GOPE permanent stations are further used in the related projects:

  • EPN - EUREF Permanent Network)
  • IGS - International GNSS Service
  • IGS LEO - service in support of Low Earth Orbiter missions
  • CZEPOS - Czech Positioning System
  • VESOG - scientific and experimental network for GNSS observations
  • CEGRN - Central Europe Geodynamics Reference Network Consorcium
  • CERGOP - Central Europe Regional Geodynamics Observation Project
  • ECGN - European Combined Geodetic Network
  • EUPOS - European Position Determination System

Map of surrounding of site Fig.1 - Figure of station TUBO and its surrounding

Permanent GPS observations are performed in the frame of International GNSS Service (IGS) and the EUREF Permanent Network (EPN). Data are used in a various analysis centres for determinations of precise coordinates and velocities (to establish and maintain reference frames), precise GNSS orbits (GPS NAVSTAR, GLONASS and Galileo systems) and Low Earth Orbiters (LEO satellites), state and variation of the Earth's atmosphere and many other parameters.

Available data

The following datasets are available from GOPE station:

  • data from GPS, GLONASS and Galileo in daily files (30s sampling)

  • data from GPS, GLONASS and Galileo in hourly files (30s sampling)

  • data from GPS, GLONASS and Galileo in 15-min files (1s sampling)

  • data from GPS, GLONASS and Galileo in real-time stream (1s sampling)

Sky obstructions Fig.1 - Sky-plot for existing obstructions

Permanent GPS observations are performed in the frame of International GNSS Service (IGS) and the EUREF Permanent Network (EPN). Data are used in a various analysis centres for determinations of precise coordinates and velocities (to establish and maintain reference frames), precise GNSS orbits (GPS NAVSTAR, GLONASS and Galileo systems) and Low Earth Orbiters (LEO satellites), state and variation of the Earth's atmosphere and many other parameters.

Available data

The following datasets are available from GOPE station:

  • data from GPS, GLONASS and Galileo in daily files (30s sampling)

  • data from GPS, GLONASS and Galileo in hourly files (30s sampling)

  • data from GPS, GLONASS and Galileo in 15-min files (1s sampling)

  • data from GPS, GLONASS and Galileo in real-time stream (1s sampling)

TUBO station 

The permanent GPS measurements at station TUBO are performed in cooperation between Research Institute of Geodesy, Topography and Cartography (Geodetic Observatory Pecný) and Faculty of Civil Engineering of the Brno University of Technology(Department of Geodesy). The station, which is a part of the EUREF permanent network, is the reference point of ETRS (European Terrestrial Reference System) in the Czech Republic. This station was been established in 1994 year and since 2001 year the permanent measurements with GPS technique been performed here.

GOPE station 

Permanent GPS observations are performed in the frame of International GPS Service (IGS) and in the frame of EUREF Permanent Network. Measurements on GOPE station of permanent network IGS and EUREF are used together with measurements on other stations:

- to determine precise orbits of satellites of the GPS NAVSTAR and GLONASS systems,