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.