2026-06-17T02:19:51Zhttp://doidb.wdc-terra.org/oaip/oai
oai:doidb.wdc-terra.org:62212026-06-10T09:54:01ZDOIDBDOIDB.GFZ
false4DOIDB.GFZ 10.5880/GFZ.1.1.2016.003 Deng, Zhiguo 0000-0002-0452-9185 GFZ German Research Center for Geosciences, Potsdam, Germany Fritsche, Mathias GFZ German Research Center for Geosciences, Potsdam, Germany Nischan, Thomas 0000-0001-5607-2298 GFZ German Research Center for Geosciences, Potsdam, Germany Bradke, Markus 0000-0003-1084-2909 GFZ German Research Center for Geosciences, Potsdam, Germany Multi-GNSS Ultra Rapid Orbit-, Clock- & EOP-Product Series GFZ Data Services 2016 GNSS GNSS Orbits GNSS Clocks EOP Earth Orientation Parameters ERP multi GNSS SP3 EARTH SCIENCE SERVICES > DATA ANALYSIS AND VISUALIZATION > GLOBAL POSITIONING SYSTEMS Deng, Zhiguo 0000-0002-0452-9185 GFZ German Research Center for Geosciences, Potsdam, Germany Fritsche, Mathias GFZ German Research Center for Geosciences, Potsdam, Germany Fritsche, Mathias GFZ German Research Center for Geosciences, Potsdam, Germany Nischan, Thomas 0000-0001-5607-2298 GFZ German Research Center for Geosciences, Potsdam, Germany Bradke, Markus 0000-0003-1084-2909 GFZ German Research Center for Geosciences, Potsdam, Germany Deng, Zhiguo GFZ German Research Center for Geosciences, Potsdam, Germany 2015-05-27 2015-05-27 2015-05-27 Dataset https://igscb.jpl.nasa.gov/igscb/data/format/erp.txt https://files.igs.org/pub/data/format/sp3c.txt Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) The German Research Center for Geosciences (GFZ) is providing ultra rapid multi-GNSS orbit-, clock- and EOP-product series (EOP = Earth Orientation Parameters).



The Orbit/Clock product covers the following Global Navaigation Satellite Systems (GNSS)
- GAL (Galileo) / Europe
- GPS (GPS) / USA
- GLO (Glonass) / Russian Federation
- BDS (Beidou) / PR China
- QZS (QZSS) / Japan

All products are estimated using the latest version of GFZ's automated EPOS-8 GNSS
processing environment and using global hourly RINEX observation data of the
International GNSS Service (IGS).


The orbit/clock product is provided:
- in the SP3-c data format,
- every 3 hours with a nominal latency of 2 hours after the last observation,
- with a 48 hour sliding window orbit duration
(1) the first 24 hours are estimated based on real GNSS RINEX observation data,
(2) the second 24 hours consist of an orbit/clock prediction,
- the orbit positions epoch interval is of 15 minutes.


The EOP product is provided:
- in the IGS ERP data format,
- every 3 hours with a nominal latency of 2 hours after last observation,
- with one estimated 24 hour EOP record based on real GNSS RINEX observation data,
- with one predicted 24 hour EOP record.



For recent (latest) products used for routine applications a registration via mgnss@gfz-potsdam.de is needed
to get special access. Products with an age older than 2 days are available without restrictions.



For the used data formats see Kouba and Mierault (2010, https://igscb.jpl.nasa.gov/igscb/data/format/erp.txt) for the description of the EOP Product Series and Hilla (2010, https://igscb.jpl.nasa.gov/igscb/data/format/sp3c.txt) for the description of the Orbit-/ Clock format SP3-c). The time series are provided in weekly folders, beginning with 27 May 2015 (GPS Week 1846).
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