Key data sources and tools

GNSS data:

• International Association of Geodesy Reference Frame Sub-Commission for Europe Permanent GNSS Network (EUREF EPN)
• International GNSS Service (IGS)
• Bundesamt für Kartografie und Geodäsie (BKG)

GNSS tools:

• GPSTk project, which is sponsored by the Space and Geophysics Laboratory, within the Applied Research Laboratories at the University of Texas at Austin (ARL:UT)

Dynasondes:

• European Incoherent Scatter Scientific Association (EISCAT) Tromsø dynasonde
• Institutet för rymdfysik (IRF) Kiruna dynasonde

Satellites:

• GPS
• Galileo
• GLONASS

Other tools:

• R language interface for Multifrontal Massively Parallel sparse direct Solver (RMUMPS)

Map of the receivers

Map of EUREF Permanent GNNS network and IGS network stations and ionosondes whose data are used in the reconstruction