# GFZ GNSS Network

When using data from this archive, please cite it as:

Ramatschi, Markus; Bradke, Markus; Nischan, Thomas; Männel, Benjamin (2019): GNSS data of the global GFZ tracking network. 
V. 1. GFZ Data Services. [http://doi.org/10.5880/GFZ.1.1.2020.001](http://doi.org/10.5880/GFZ.1.1.2020.001)

## Contact

[gnss@gfz.de](mailto:gnss@gfz.de)

## Abstract

Since the early 1990s, the GFZ Helmholtz Centre for Geosciences has operated a global GNSS station network with currently about 120 stations for 
precise satellite clock and orbit determination, realization of the terrestrial reference frame, radio occultation measurements or studies on crust dynamics. 
A subset of these stations contributes also to the tracking networks of the International GNSS Service (IGS) and the EUREF Permanent GNSS Network (EPN). 
Other stations contribute to GFZ observatories (IPOC, DESERVE, TERENO), to WMO Global Climate Observing System Reference Upper-Air Network (GRUAN) or to other external cooperations.

We offer data of more than 50 GFZ GNSS stations under this DOI. Nearly all stations are equipped with Javad or Septentrio hardware. 
Depending on the location and hardware they provide data of GPS (L1/L2/L5), GLONASS (L1/L2/L3), Galileo (E1/E5a/E5b/E6), 
BeiDou (B1/B1C/B2/B2a/B2b/B3/B3A), QZSS (L1/L2/L5/L6), NAVIC (L5), and SBAS (L1/L5).

The [GNSS Station Nework Site](https://isdc.gfz.de/gnss-station-network) provides direct access to the 1s and 30s sampled RINEX data (near real-time, file based) and to real-time streams. 
Real-time streams are available for stations contributing to the IGS. 
Raw data GNSS binary raw observations are available upon request. 
All GFZ stations follow the [CORS Guidelines of the International GNSS Service](https://igs.git-pages.gfz-potsdam.de/igs-cors-guidelines/en/).

Station specific metadata can be found in the sitelogs folder.