Analysis of Noise and Velocity in GNSS EPN-Repro 2 Time Series

This study evaluates the EUREF Permanent Network (EPN) station position time series of approximately 200 GNSS stations subject to Repro 2 reprocessing campaign in order characterize dominant types noise and amplitude their impact on estimated velocity values associated uncertainties. The visual inspection how different model represents analysed data was done using power spectral density residuals it is coherent with calculated Allan deviation (ADEV)-white flicker noise. velocities resulted from are compared obtained by Median Interannual Difference Adjusted for Skewness (MIDAS). results show that only 3 present a random walk powerlaw horizontal vertical components. We concluded component similar case MIDAS maximum likelihood estimation (MLE), but we also found uncertainties higher MLE. Additionally, there spatial correlation amplitude, regarding differences Up component.