In Global Navigation Satellite Systems (GNSS) the role of atomic clocks is essential for the determination of the user position. Nowadays, several satellite navigation systems are operating and different clock technologies have been employed on board satellites, taking benefit of the improvements reached during the last tens of years. The analysis of GNSS clock performance is thus crucial for ensuring the GNSS positioning and timing capabilities. We performed an analysis on the clock estimates generated by the Information-Analytical Centre (IAC) of the Russian Federal Space Agency, which provides a service similar to the one of the International GNSS Service (IGS). Therefore, we collected and processed the RINEX for clock files containing satellite clock estimates for GPS and GLONASS constellations, from 2008 to 2013: with our statistical tools we performed an analysis of the performances of the different space clock technologies employed on board different GNSSs. In particular, we focused the attention on the frequency behaviour and the frequency stability, evaluating also the stationarity of these characteristics, with the aim of classifying and analysing the clock anomalies.

Analysis on GNSS space clocks performances / Cernigliaro, A.; Valloreia, S.; Galleani, L.; Tavella, Patrizia. - (2013), pp. 835-837. (Intervento presentato al convegno 2013 Joint European Frequency and Time Forum and International Frequency Control Symposium, EFTF/IFC 2013 tenutosi a Prague nel 21-25 July 2013) [10.1109/EFTF-IFC.2013.6702289].

Analysis on GNSS space clocks performances

TAVELLA, PATRIZIA
2013

Abstract

In Global Navigation Satellite Systems (GNSS) the role of atomic clocks is essential for the determination of the user position. Nowadays, several satellite navigation systems are operating and different clock technologies have been employed on board satellites, taking benefit of the improvements reached during the last tens of years. The analysis of GNSS clock performance is thus crucial for ensuring the GNSS positioning and timing capabilities. We performed an analysis on the clock estimates generated by the Information-Analytical Centre (IAC) of the Russian Federal Space Agency, which provides a service similar to the one of the International GNSS Service (IGS). Therefore, we collected and processed the RINEX for clock files containing satellite clock estimates for GPS and GLONASS constellations, from 2008 to 2013: with our statistical tools we performed an analysis of the performances of the different space clock technologies employed on board different GNSSs. In particular, we focused the attention on the frequency behaviour and the frequency stability, evaluating also the stationarity of these characteristics, with the aim of classifying and analysing the clock anomalies.
2013
2013 Joint European Frequency and Time Forum and International Frequency Control Symposium, EFTF/IFC 2013
21-25 July 2013
Prague
none
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/35155
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