Follow this
link to skip to the main content
GipsyX is developed by the Jet Propulsion Laboratory (JPL), and maintained by the Near Earth Tracking Applications and Systems groups. It replaces the GIPSY-OASIS (GNSS-Inferred Positioning System and Orbit Analysis Simulation Software) software.


  • Analysis of data from Global Navigation and Satellite Systems (GNSS):
    • Global Positioning System (GPS)
    • Russian GLONASS
    • French DORIS
    • Satellite Laser Ranging (SLR) system
  • Precise centimeter-level GNSS-based positioning and timing:
    • Space platforms, including low-Earth orbiters and GNSS constellations
    • Airplanes
    • Terrestrial (ground) stations, static or moving
    • Time transfer
  • Single high-level user interface supports majority of precise positioning applications
  • Single-receiver ambiguity resolution using JPL's GPS orbit and clock products
  • Documentation accompanying software modules, and online help
  • Training at annual GipsyX user group classes, and online
  • Hundreds of research and educational users in more than 20 countries
  • Builds on more than 35 years of JPL experience with GPS data analysis


  • Terrestrial positioning for geophysical research:
    • Earth deformation, plate tectonics
    • GNSS Networks (e.g. PBO and SCIGN)
    • Ice flow
    • Climate studies through observation of troposphere and ionosphere
    • Reference frame (geocenter and scale) and Earth rotation parameters
  • Airplane positioning
  • Precise orbit determination
    • Low-Earth orbiters: Topex/Poseidon, Jason-1, Jason-2/OSTM, Jason-3, Sentinel-6, NISAR, GRACE, GRACE-FO, Champ, SAC-C, COSMIC, COSMIC-2, DSAC, Space Shuttle (e.g. SRTM), Commercial Satellites
    • GNSS constellations including GPS, GLONASS, Galileo, Beidou, QZSS, and IRNSS


  • GipsyX-1.7 Release
    Date: 2021-03-05

    GipsyX-1.7 has been released. It is available for download by licensed users from the download area.
  • GipsyX-1.6 Release
    Date: 2020-11-25

    GipsyX-1.6 has been released. It is available for download by licensed users from the download area.
  • GIPSY-OASIS version 6.4.1
    Date: 2020-01-08

    Bugfix for 2020-related bug, available for active license holders from the GOA download area.
  • Repro3.0 Completed
    Date: 2019-10-10

    JPL repro3.0 is now complete. It provides orbit and clock products in the IGS14 reference frame extending back to 1992-08-15 and forward to the present, where it is extended with our weekly Final products.