Follow this link to skip to the main content NASA Home Page JPL Home Page Caltech Home Page
NASA - Jet Propulstion Laboratory GDGPS vertical separator + View the NASA Portal
JPL Home JPL - Earth JPL - Solar System JPL - Stars and Galaxies JPL - Technology
The Automatic Precise Point Positioning Service of the Global Differential GPS System
Unique Features
About GDGPS How to use APPS
Under The Hood Instant Positioning Registered Users Register
How To Use APPS

  APPS supports the following GPS measurement file upload options:
  • Manually through this web site for instant processing. Try it
  • e-Mail APPS the URL of your files (on your anonyouse FTP server) and specify the
    required proce ssing type. Learn more
  • Upload your measurement files to a special area on our Secure FTP server, and they
    will be processed automatically. Learn more
  APPS supports the following measurement file types:
  • Formats: RINEX 2, RINEX 2.11 ... Learn More
  • Filename: arbitrary
  • Measurement rate: up to 1 second
  • Pressure measurements may be optionaly uploaded, from which hydrostatic zenith delay will be derived
  APPS supports a variety of useful processing modes Learn More
  • Static
  • Kinematic
  • Near Real Time (NRT)
  • Most Accurate
      APPS will produce the following output:
    • All coordinates are in ITRF2014
    • Summary file: Run status (success/error), key output values, list of output.
    • XYZ file: Time, X, Y, Z coordianates, together with their formal errors.
    • LLH file: Time, Lat, Lon, Height coordinates, together with their formal errors.
    • GIPSY STACOV file: X, Y, Z coordinates with full covariance (for static only)
    • GIPSY TDP file: Time, X, Y, Z coordinates in GIPSY's TDP format.
    • Log file: GIPSY run time messages and statistics
    • Google Earth URL: with the plotted trajectory/site
    • Instant positioning for web users, where you will see the X, Y, Z coordinates and
      the Lat, Lon, Height on this web site
    • Access information: URL of output files and password
    link to First Gov NASA logo