Global Positioning System (GPS) position time series generated using inconsistent satellite products should be aligned to a secular Terrestrial Reference Frame by Helmert transformation. However, unmodeled non-linear variations in station positions can alias into transformation parameters. Based on 17 years of position time series of 112 stations produced by Precise Point Positioning (PPP), we investigated the impact of network configuration and scale factor on long-term time series proc… Show more
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