Error analysis for European IGS stations
PBN-AR
Instytucja
Wydział Inżynierii Lądowej i Geodezji (Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
STUDIA GEOPHYSICA ET GEODAETICA
ISSN
0039-3169
EISSN
1573-1626
Wydawca
SPRINGER
DOI
URL
Rok publikacji
2016
Numer zeszytu
Strony od-do
17-34
Numer tomu
60
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
Słowa kluczowe
angielski
GPSnoise analysisspatio-temporal filtering
Streszczenia
Język
abchaski
Treść
Each of the GPS time series that describes the changes of topocentric components consists of a deterministic and a stochastic part, whose character influences the errors of the deterministic parameters. As to the uncertainties of reliable velocities of permanent satellite station systems, surveys that estimate and take into account any dependencies that may affect subsequent operational efficiency are very important. For this analysis, we used 42 stations from the IGS (International GNSS Service) network from Europe, processed at the Military University of Technology EUREF Permanent Network Local Analysis Centre (MUT LAC). The deterministic part of the GPS time series was removed using the least squares method. The seasonal periods in topocentric components were determined assuming the existence of the residual Chandler oscillation (1.67 cpy), as well as the annual tropical (1 cpy) and draconitic (1.04 cpy) oscillations with their harmonics up to 4th. We assumed the character of the residue as a combination of white and powerlaw noise. The obtained results show, that in the case of the European sub-network of IGS stations we are dealing with the coloured noise between white and flicker noise with the amplitudes between 3 to 6 mm/year-k/4 for horizontal components and between 6 to 15 mm/year-κ/4 for the vertical ones, where κ is a spectral index. Finally, we showed that the amplitudes and spectral indices of noise are reduced after performing a spatio-temporal filtering. All the elicited results referred to the uncertainties of velocities by estimating them before and after filtration and the simulation of their values for different lengths of the time series.
Cechy publikacji
Original article
Original article presents the results of original research or experiment.
Oryginalny artykuł naukowy
Oryginalny artykuł naukowy przedstawia rezultaty oryginalnych badań naukowych lub eksperymentu.
Inne
System-identifier
PBN-R:649485
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