Reference : Total Impact of Periodic Terms and Coloured Noise on Velocity Estimates
Scientific congresses, symposiums and conference proceedings : Poster
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/10993/30096
Total Impact of Periodic Terms and Coloured Noise on Velocity Estimates
English
Klos, Anna [Warsaw Military University of Technology]
Olivares, German []
Teferle, Felix Norman mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Bogusz, Janusz [Warsaw Military University of Technology]
Hunegnaw, Addisu mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
5-Feb-2016
No
No
International
IGS Workshop
08-02-2016 to 12-02-2016
Sydney
Australia
[en] Periodic Terms ; Coloured Noise ; Velocity
[en] The uncertainties of velocity estimates for position time series of Global Navigation Satellite System
(GNSS) stations are mainly affected by a misfit of the deterministic model applied to this data.
Insufficiently modelled seasonal signals will propagate into the stochastic model and falsify the results of the noise analysis besides the velocity estimates and their uncertainties. In this presentation we derived the General Dilution of Precision (GDP) of velocity uncertainties. We define this dilution as the ratio between the uncertainties of velocities determined when different deterministic and stochastic models are applied. In this way we discuss, referring to previously published results, how insufficiently modelled seasonal signals influence station velocity uncertainties with white and coloured noise. Using simulated and real data from selected (115) IGS (International GNSS Service) stations we show that the noise character affects GNSS data more than seasonals for time series longer than 9 years.
http://hdl.handle.net/10993/30096

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