Galileo Broadcast Ephemeris and Clock Errors Analysis: 1 January 2017 to 31 July 2020

Alonso, María Teresa; Sanz, Jaume; Juan, José Miguel; Rovira García, Adrià; Casado, Guillermo González

doi:10.3390/s20236832

Open AccessArticle

Galileo Broadcast Ephemeris and Clock Errors Analysis: 1 January 2017 to 31 July 2020

by

María Teresa Alonso

^*

,

Jaume Sanz

,

José Miguel Juan

,

Adrià Rovira García

and

Guillermo González Casado

Research Group of Astronomy and Geomatics (gAGE), Universitat Politècnica de Catalunya (UPC), 08034 Barcelona, Spain

^*

Author to whom correspondence should be addressed.

Sensors 2020, 20(23), 6832; https://doi.org/10.3390/s20236832

Submission received: 23 October 2020 / Revised: 22 November 2020 / Accepted: 23 November 2020 / Published: 29 November 2020

(This article belongs to the Section Remote Sensors)

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Abstract

A preliminary analysis of Galileo F/NAV broadcast Clock and Ephemeris is performed in this paper with 43 months of data. Using consolidated Galileo Receiver Independent Exchange (RINEX) navigation files, automated navigation data monitoring is applied from 1 January 2017 to 31 July 2020 to detect and verify potential faults in the satellite broadcast navigation data. Based on these observation results, the Galileo Signal-in-Space is assessed, and the probability of satellite failure is estimated. The Galileo nominal ranging accuracy is also characterized. Results for GPS satellites are included in the paper to compare Galileo performances with a consolidated constellation. Although this study is limited by the short observation period available, the analysis over the last three-year window shows promising results with

P_{s a t}

= 3.2 × 10⁻⁶/sat, which is below the value of 1 × 10⁻⁵ stated by the Galileo commitments.

Keywords: GNSS; Galileo; GPS; orbits and clock; data cleansing; anomaly detection and verification; SISA; observed satellite fault probabilities

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MDPI and ACS Style

Alonso, M.T.; Sanz, J.; Juan, J.M.; Rovira García, A.; Casado, G.G. Galileo Broadcast Ephemeris and Clock Errors Analysis: 1 January 2017 to 31 July 2020. Sensors 2020, 20, 6832. https://doi.org/10.3390/s20236832

AMA Style

Alonso MT, Sanz J, Juan JM, Rovira García A, Casado GG. Galileo Broadcast Ephemeris and Clock Errors Analysis: 1 January 2017 to 31 July 2020. Sensors. 2020; 20(23):6832. https://doi.org/10.3390/s20236832

Chicago/Turabian Style

Alonso, María Teresa, Jaume Sanz, José Miguel Juan, Adrià Rovira García, and Guillermo González Casado. 2020. "Galileo Broadcast Ephemeris and Clock Errors Analysis: 1 January 2017 to 31 July 2020" Sensors 20, no. 23: 6832. https://doi.org/10.3390/s20236832

APA Style

Alonso, M. T., Sanz, J., Juan, J. M., Rovira García, A., & Casado, G. G. (2020). Galileo Broadcast Ephemeris and Clock Errors Analysis: 1 January 2017 to 31 July 2020. Sensors, 20(23), 6832. https://doi.org/10.3390/s20236832

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Galileo Broadcast Ephemeris and Clock Errors Analysis: 1 January 2017 to 31 July 2020

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