Our processing strategy for repro3 is summarized in the IGS analysis summary file TUG0R03FIN.acn.
We apply an uncombined and undifferenced (raw) observation approach in our GNSS processing (Strasser et al., 2019). Our software package GROOPS (Mayer-Gürr et al., 2020), which supports multi-GNSS processing among other features, has been released as open-source code on GitHub (https://github.com/groops-devs/groops).
The processing included all available stations from the proposed repro3 station list (1212 stations), reaching more than 800 stations per day in the mid-2010s. All available code and phase observations on all frequencies (except Galileo E6) have been used at the full 30-second sampling period.
The following background models and corrections were used during the processing:
This work was partly embedded in the project COSMOS, which is funded by the Austrian Research Promotion Agency (FFG) within the Austrian Space Applications Program (ASAP) Phase XVI.