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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 Course - Covilhã, Portugal
    Date: 2024-09-04 - 2024-09-06

    A three-day GipsyX course will be offered at the Space and Earth Geodetic Analysis Laboratory (SEGAL), University of Beira Interior, in Covilhã, Portugal between September 4-6, 2024. More information
  • GOA Rapid/Ultra discontinuation
    Date: 2024-02-01

    The last Rapid products for GIPSY-OASIS were delivered for 2024-01-30 and the Ultra products were delivered for 2024-02-01. GOA Finals will continue for now, but may stop at any time and no later than the IGS20 transition for JPL Finals.
  • Websites outage
    Date: 2024-01-22

    All GipsyX-related websites will be down for approximately 4 hours due to a hardware change. That includes sideshow (orbit and clock products), this website, and the user forum.
  • GipsyX-2.2 Release
    Date: 2023-09-05

    GipsyX-2.2 has been released. It is available for download by licensed users from the download area.
  • GipsyX-2.1 Release
    Date: 2022-08-23

    GipsyX-2.1 has been released. It is available for download by licensed users from the download area.
  • GipsyX-2.0 Release
    Date: 2022-01-12

    GipsyX-2.0 has been released. It is available for download by licensed users from the download area. The major changes relate to processing all data as RINEX3 by default.
  • 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.