Error analysis for European IGS stations

摘要: Each of the GPS time series that describes changes topocentric components consists a deterministic and stochastic part, whose character influences errors parameters. As to uncertainties reliable velocities permanent satellite station systems, surveys estimate take into account any dependencies may affect subsequent operational efficiency are very important. For this analysis, we used 42 stations from IGS (International GNSS Service) network Europe, processed at Military University Technology EUREF Permanent Network Local Analysis Centre (MUT LAC). The part was removed using least squares method. seasonal periods in were determined assuming existence residual Chandler oscillation (1.67 cpy), as well annual tropical (1 cpy) draconitic (1.04 oscillations with their harmonics up 4th. We assumed residue combination white powerlaw noise. obtained results show, case European sub-network dealing coloured noise between flicker amplitudes 3 6 mm/year-k/4 for horizontal 15 mm/year-κ/4 vertical ones, where κ is spectral index. Finally, showed indices reduced after performing spatio-temporal filtering. All elicited referred by estimating them before filtration simulation values different lengths series.