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Section 1.1 Space Geodetic Techniques

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GFZRNX - RINEX GNSS Data Conversion and Manipulation Toolbox

GFZRNX is a toolbox designed and created for the needs of the GNSS community. It supports RINEX observation, navigation and meteorological data. The major tasks include checking, repairing and manipulating (sampling, selection of satellite systems a…
GNSS Meteorology

GNSS data from the geodetic receivers of global and regional ground networks are operationally analysed at GFZ in near-real time. The atmospheric data products, like zenith total delay and converted integrated water vapour above the ground stations,…
GNSS Operational Data Centre (ODC)

With the setup of global and regional GNSS networks and the IGS Analysis Centre in the early 1990s, GFZ has been implemented an „Operational Data Centre (ODC)” to handle the huge amount of data.

The ODC serves the preparation and quality manageme…
GNSS Station Network

Since the early 1990s, the GFZ has operated a global GNSS station network with currently about 70 stations for precise satellite clock & orbit determination, realization of the terrestrial reference frame, radio occultation measurements or studies o…
IAG Services - Services of the International Association of Geodesy (IAG Services)

The International Association of Geodesy (IAG) is the scientific organization in the field of geodesy. It promotes scientific cooperation and research in geodesy on a global scale and contributes to it through its various research bodies. It is a me…
IGS - International GNSS Service

The International GNSS Service (IGS) is a service of the International Association of Geodesy (IAG). It provides Global Navigation Satellite Systems (GNSS) data and products with highest quality to the scientific community and beyond.

GFZ contri…
IGS Analysis Center

As one of the analysis centers of the International GNSS Service (IGS), we process thousands of GNSS observations daily to derive precise station coordinates, satellite orbits, satellite clock corrections and Earth rotation parameters. In line with …
IGS Reprocessing Campaigns

After the successful first full reprocessing of the International GNSS Service (IGS), the Analysis Centers (ACs) of the IGS started the second reprocessing in 2010. The complete history of GPS data collected by the global IGS network since 1994 was …
ISDC - Information System and Data Center

The Information System and Data Center (ISDC) is an access point for diverse geoscientific data, corresponding metadata, scientific documentation and software tools. The majority of the data and information that are offered to the public are global …
IVS - International VLBI Service for Geodesy and Astronomy

Very Long Baseline Interferometry (VLBI) is a highly accurate technique, used since the 1970s in geodesy that has delivered groundbreaking scientific discoveries. This technique allows scientists to measure global distances with millimeter accuracy;…
MGEX - Analysis Center of the Multi-GNSS Experiment

The Multi GNSS Experiment (MGEX) was initiated by the IGS in 2012. In MGEX all available signals of the new GNSS satellites are analysed. Currently, seven IGS analysis centers generate consistent and precise orbits and clock corrections of the new s…
TIGA - Processing Center of the Tide Gauge Benchmark Monitoring Working Group

Being a modern geodetic measuring method, GNSS (Global Navigation Satellite Systems) has reached an important role in geosciences. Within the scope of the Tide Gauge Benchmark Monitoring Working Group (TIGA-WG) of the IGS, GFZ analyses and reprocess…
GRACE - Gravity Recovery and Climate Experiment inactive

GRACE was a joint project between the National Aeronautics and Space Administration (NASA) and the Deutsches Zentrum für Luft- und Raumfahrt (DLR). The mission has been proposed in 1996 jointly by the University of Texas at Austin, Center for Space …