Follow this
link to skip to the main content

GPS timeseries at JPL

We produce various position timeseries using the GIPSY-OASIS software in a Precise Point Positioning mode. We use our Network Processor software to manage the large numbers of PPP jobs on a linux cluster. In some cases, a troposphere series is also retained.

Our series:

Western North America & Global

  • 1992-present
  • Version "repro2011b" completed Dec 2011 is current
  • New ITRF2014 version expected 2nd-3rd quarter 2017
  • Position and troposphere series are extended on a weekly basis
  • Metadata from SOPAC xml file (Warning! Large file!)
  • View the network (opens in new window)
  • Download from: ftp://sideshow.jpl.nasa.gov/pub/JPL_GPS_Timeseries/repro2011b/raw/
  • also available via the joint SIO and JPL GPS Explorer portal, which also offers map-based site selection
  • Higher-level data products based on this series:
    • At the GPS Explorer portal for JPL and SIO Solid Earth joint data products:
      • plots
      • a combination of the JPL and SIO series
      • outliers removed; offsets determined; spatial filtering
      • derived troposphere products
      • derived strain products.
    • At JPL:
      • plots
      • outliers removed; offsets determined and velocities are estimated
  • 1992-08-16 to present:
    • Created using GIPSY's precise point positioning (PPP) capability with JPL GIPSY Final Orbits, reprocessed in late 2011 in IGS08
    • VMF1 troposphere with VMF1grid nominals
    • IGS08 absolute antenna calibrations (igs08_1604.atx & later)
    • No second-order ionosphere

Extended network

  • Updated irregularly (last update: Feb 2012)
  • Includes PPP solutions for permanent and campaign sites
  • To be available soon

Japan GEONET

  • All data courtesy of GEONET/GSI
  • Daily 2001-2011 PPP positions: Inquire for availability
  • Subdaily Tohoku-Oki positions and coseismic offsets from the ARIA project: FTP location

Disclaimer: JPL's time series products are intended for research and educational purposes only. Commercial use requires prior approval from the Jet Propulsion Laboratory, California Institute of Technology.

Who we are:

  • Angelyn.Moore (at) jpl.nasa.gov - Network Processor development; Western North America & Global; Japan GEONET; Extended network
  • Sharon.Kedar (at) jpl.nasa.gov - Western North America & related strain products
  • Michael.Heflin (at) jpl.nasa.gov - JPL higher-level data products
...all of the Geodynamics and Space Geodesy Group.

Susan.Owen (at) jpl.nasa.gov also contributed to these timeseries, and we enjoy helpful interactions with many other GIPSY developers at JPL.