Fast-PPP Products

Accuracies of Fast-PPP Corrections


A secured server allows users to download gAGE precise products.

If you wish to gain access to the Fast-PPP products, send an email to info.gage [at]


The gAGE precise products consist of four precise products listed here:

  1. Ambiguities: fractional part of carrier-phase ambiguities (B1 BW), see format.
  2. STEC: very precise sample of the actual slant total electron content, see format.
  3. IONEX: gAGE IONEX files, see format.
  4. CLK: satellite clock offsets, see format.


The server is structured in several directories:

  • The first directory is defined to be yyyy, where

                 yyyy: year 4-digit (i.e., 2014).

  • The second directory is defined to be ddd, which contains the four precise products gzip compressed for such day, where

                 ddd: day of the year number (i.e., 001).


Fast-PPP credits

If you feel it is appropriate, you may consider paying us back by citing the Fast-PPP papers:

Rovira-Garcia A., Juan J. M., Sanz J., González-Casado G., D. Ibáñez-Segura (2016). "Accuracy of ionospheric models used in GNSS and SBAS: methodology and analysis", Journal of Geodesy, Volume 90, Issue 3, pp 229-240, March 2016. DOI: 10.1007/s00190-015-0868-3

A. Rovira-Garcia, Juan, J. M., J. Sanz, Guillermo González-Casado (2015). "A World-Wide Ionospheric Model for Fast Precise Point Positioning", IEEE Transactions on Geoscience and Remote Sensing, Volume: 53, Issue: 8, DOI10.1109/TGRS.2015.2402598 (Open Access).