GFZ contribution to the third IGS reprocessing campaign

Based on a large network of continuously operated GNSS tracking stations, the International GNSS Service (IGS) has a valuable contribution to the realization of the International Terrestrial Reference System. To provide the most accurate and consistent solution, the IGS refined the strategy and the set of associated models for the ongoing third reprocessing campaign. Beyond updated background models, a significant improvement is the combined reprocessing of three GNSS, namely GPS, GLONASS, and Galileo. Furthermore, signal-specific receiving antenna calibrations for Galileo and scale-free transmission phase center positions are applied. These modifications will allow exciting new investigations based on the delivered products.

In this contribution, we will present the final GFZ contribution to the IGS reprocessing efforts. We will present selected aspects of the station selection, parametrization, and processing scheme in the first part. Secondly, we will focus on the results by discussing the derived orbits, Earth rotation parameters, and station coordinates. Thirdly, the first results of our TIGA (IGS Tide Gauge Benchmark Monitoring Project) reprocessing will be presented, which are based on the previously discussed orbits and satellite clocks.