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, please send an email to info.gage [at] indicating the motivation and purpose of using the Fast-PPP Products.


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., Ibánez D., Orus Perez R., Juan J. M., Sanz J., González-Casado G., (2020). " Assessing the quality of ionospheric models through GNSS positioning error: Methodology and Results", GPS Solutions, 24:4.

J. Sanz, Juan, J.M.,Rovira-Garcia A.,  González-Casado G., (2017). "GPS differential code biases determination: methodology and analysis", GPS Solutions 21(4):1549-1561.