Time and Frequency Transfer with Three Different GNSS Systems

H. Esteban, G. Cerretto

Abstract: Code and phase multichannel Global Navigation Satellite System (GNSS) receivers, along with dedicated geodetic algorithms, can be considered one of the most useful and sophisticated systems for the remote comparison of atomic clocks and time scales. Among these algorithms, Precise Point Positioning (PPP) allows for performances that can reach the “the state of the art” in Time and Frequency Transfer domain, characterized by initial short-term time instability of tens of picoseconds. In this paper, we show the results produced with a new PPP algorithm developed by ROA, focused on the station clock results obtained using the GPS and GLONASS GNSS signals, addressing for a specific analysis on the calibration of the delays of the receivers channels tracking for the signals coming from the Russian satellites constellation. This is required due to the different set of frequencies used by each pair of GLONASS satellites. In addition, we present code-only time transfer results using dedicated commercial receivers tracking for the signals transmitted by the first four Galileo operative satellites.
Published in: Proceedings of the 45th Annual Precise Time and Time Interval Systems and Applications Meeting
December 2 - 5, 2013
Hyatt Regency Bellevue
Bellevue, Washington
Pages: 126 - 133
Cite this article: Esteban, H., Cerretto, G., "Time and Frequency Transfer with Three Different GNSS Systems," Proceedings of the 45th Annual Precise Time and Time Interval Systems and Applications Meeting, Bellevue, Washington, December 2013, pp. 126-133.
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