Is a system for position determination and navigation on Earth and in the air by receiving the signals from navigation satellites and pseudolites.

  • GPS (Global Positioning System) - USA
    fully functional since 1995
  • GLONASS (GLObal NAvigation Satellite System) - Russia
    limited functionality

  • Galileo - Europe
    Completion about 2020

  • IRNSS (Indian Regional Navigation Satellite System) - India
    functionality since 2016

  • Beidou (chinese: big bear) - China
    Completion about 2020

  • QZSS (Quasi-Zenit-Satelliten-System) - Japan
    Completion about 2020

  • SBAS-Korrekturdienste (Satellite Based Augmentation System)
    Satellite-based supplementary systems that support existing satellite navigation systems.

The different satellite systems use different frequencies:

Frequenzy of GNSS Frequenzen der GNSS