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