ONCLE (One Clock Ensemble) for Galileo’s Next-Generation Robust Timing System

REFERENCES

1. ↵
   1. Bertacco, E. K.,
   2. Calonico, D.,
   3. Cantoni, E.,
   4. Cerretto, G.,
   5. Costa, R.,
   6. Fiasca, F.,
   7. Formichella, V.,
   8. Levi, F.,
   9. Mura, A.,
   10. Perucca, A.,
   11. Pizzocaro, M.,
   12. Pollastri, F.,
   13. Sellone, M.,
   14. Sesia, I.,
   15. Signorile, G.,
   16. Terzi, P.,
   17. Thai, T. T.,
   18. Costanzo, G. A., &
   19. Rovera, G. D.

   (2020). Latest improvements at INRIM time laboratory. Proc. of the 51st Annual Precise Time and Time Interval Systems and Applications Meeting, San Diego, CA, 159–168. https://doi.org/10.33012/2020.17296
2. ↵
   1. Brown, K. R.

   (1991). The theory of the GPS composite clock. Proc. of the 4th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GPS 1991), Albuquerque, NM, 223–242. https://www.ion.org/publications/abstract.cfm?articleID=4867
3. ↵
   1. European Space Agency (ESA)

   . (n.d.) Galileo system. https://www.esa.int/Applications/Navigation/Galileo/Galileo_system
4. ↵
   1. Felbach, D.,
   2. Heimbuerger, D.,
   3. Herre, P., &
   4. Rastetter, P.

   (2003). Galileo payload 10.23 MHz master clock generation with a Clock Monitoring and Control Unit (CMCU). IEEE International Frequency Control Symposium and PDA Exhibition Jointly with 17th European Frequency and Time Forum, Tampa, FL, 583–586. https://doi.org/10.1109/FREQ.2003.1275156
5. ↵
   1. Galleani, L., &
   2. Tavella, P.

   (2012). Detection of atomic clock frequency jumps with Kalman filter. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 59(3), 504–509. https://doi.org/10.1109/TUFFC.2012.2221

   PubMed
6. ↵
   1. Galleani, L.,
   2. Signorile, G.,
   3. Formichella, V., &
   4. Sesia, I.

   (2019). Generating a real-time time scale with an ensemble clock and a primary frequency standard. 2019 Joint Conference of IEEE International Frequency Control Symposium and European Frequency and Time Forum, Orlando, FL. https://doi.org/10.1109/FCS.2019.8856076
7. ↵
   1. Huang, X.,
   2. Gong, H., &
   3. Ou, G.

   , Detection of weak frequency jumps for GNSS onboard clocks. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 61(5), 747–755. https://doi.org/10.1109/TUFFC.2014.2967
8. ↵
   1. Khare, A.,
   2. Arora, R.,
   3. Banik, A., &
   4. Mehta, S. D.

   (2016), Autonomous Rubidium clock weak frequency jump detector for onboard navigation satellite system. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 63(2), 326–335. https://doi.org/10.1109/TUFFC.2015.2508939
9. ↵
   1. Krauss, P. A.,
   2. Zenzinger, A., &
   3. Fischer, S.

   (2014). Robust timing subsystem––Generating the next generation timing signal. Proc. of the 27th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 2014), Tampa, FL, 3380–3388. https://www.ion.org/publications/abstract.cfm?articleID=12460
10. ↵
    1. Morante, Q.,
    2. Cretoni, D.,
    3. Putortì, G.,
    4. Varriale, E.,
    5. Blanchi, M.,
    6. Cantelmo, C.,
    7. Baig, J. F.,
    8. Nogues, J. F.,
    9. Aouad, A. T.,
    10. Siccardi, M.,
    11. Mudrack, A., &
    12. Schlarmann, B.

    (2016). Performance results of the Galileo precise timing facility. 2016 IEEE Metrology for Aerospace (MetroAeroSpace), Florence, Italy, 484–488. https://doi.org/10.1109/MetroAeroSpace.2016.7573263
11. ↵
    1. Riley, W. J.

    (2008). Algorithms for frequency jump detection. Metrologia, 45, S154–S161. http://dx.doi.org/10.1088/0026-1394/45/6/S21
12. ↵
    1. Rochat, P.,
    2. Droz, F.,
    3. Wang, Q., &
    4. Froidevaux, S.

    (2012). Atomic clocks and timing systems in global navigation satellite systems. The European Navigation Conference, Gdansk, Poland. https://www.orolia.com/wp-content/uploads/2021/07/GNSS_Atomic_Clocks-1.pdf
13. ↵
    1. Signorile, G.

    (2014). Analysis of a Kalman filter detector for atomic clock anomalies. 2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), Beijing, China. https://doi.org/10.1109/URSIGASS.2014.6928990
14. ↵
    1. Soualle, F.,
    2. Beck, T.,
    3. Trautenberg, H.,
    4. Felbach, D.,
    5. Stopfucken, L.,
    6. Wendel, J.,
    7. Fernandez, F. A.,
    8. Fernandez, A., &
    9. Sanchez Nogales, M.

    (2010). New concept for the on-board master clock generation unit for future Galileo satellites. Proc. of the 2010 International Technical Meeting of the Institute of Navigation, San Diego, CA, 880–894. https://www.ion.org/publications/abstract.cfm?articleID=8869
15. ↵
    1. Stehlin, X.,
    2. Wang, Q.,
    3. Jeanneret, F.,
    4. Rochat, P., &
    5. Detoma, E.

    (2006). Galileo system time physical generation. Proc. of the 38th Annual Precise Time and Time Interval Systems and Applications Meeting, Reston, VA, 395–406. https://www.ion.org/publications/abstract.cfm?articleID=13664
16. ↵
    1. Stein, S. R.

    (2003). Time scales demystified. IEEE International Frequency Control Symposium and PDA Exhibition Jointly with the 17th European Frequency and Time Forum. Tampa, FL, 223–227. https://doi.org/10.1109/FREQ.2003.1275093
17. ↵
    1. Thomas, C.,
    2. Wolf, P., &
    3. Tavella, P.

    (1994). Time scales, BIPM. Monographie, 94(1). https://www.bipm.org/en/publications/other-monographies
18. ↵
    1. Trainotti, C.,
    2. Schmidt, T. D., &
    3. Furthner, J.

    (2019). Simulating the realization of a mixed clock ensemble. 2019 Joint Conference of IEEE International Frequency Control Symposium and European Frequency and Time Forum, Orlando, FL. https://doi.org/10.1109/FCS.2019.8856103
19. ↵
    1. Wang, Q.,
    2. Rochat, P., &
    3. Stehlin, X.

    (2008). Backup hydrogen maser steering system for Galileo precise timing facility. International Journal of Navigation and Observation, 730284. https://doi.org/10.1155/2008/730284
20. ↵
    1. Wang, Q., &
    2. Rochat, P.

    (2009). An anomaly clock detection algorithm for a robust clock ensemble. Proc. of the 41st Annual Precise Time and Time Interval Systems and Applications Meeting, Santa Ana Pueblon NM, 121–129. https://www.ion.org/publications/abstract.cfm?articleID=10678
21. ↵
    1. Wang, Q.,
    2. Droz, F., &
    3. Rochat, P.

    (2015). Robust clock ensemble for time and frequency reference system. 2015 Joint Conference of the IEEE International Frequency Control Symposium & European Frequency and Time Forum, Denver, CO, 374–378. http://doi.org/10.1109/FCS.2015.7138861
22. ↵
    1. Wang, Q., &
    2. Rochat, P.

    (2019). Algorithms development and verification for next generation on-board clock monitoring and control unit. 2019 Joint Conference of IEEE International Frequency Control Symposium & European Frequency and Time Forum, Orlando, FL. https://doi.org/10.1109/FCS.2019.8856006
23. ↵
    1. Zanello, R.,
    2. Blanch, M.,
    3. Piras, C.,
    4. Detoma, E.,
    5. Capetti, P.,
    6. Bellotti, A., &
    7. Villabruna, D.

    (2009). Implementing the Galileo Precise Timing Facility. 2009 IEEE International Frequency Control Symposium Joint With the 22nd European Frequency and Time Forum, Besancon, France. http://doi.org/10.1109/FREQ.2009.5168263
24. ↵
    1. Zenzinger, A.,
    2. Bartusch, T.,
    3. Kuehl, C.,
    4. Fischer, S., &
    5. Shrestha, A.

    (2012). Failure detection and correction for clock ensemble in space. 2012 6th ESA Workshop on Satellite Navigation Technologies (Navitec 2012) & European Workshop on GNSS Signals and Signal Processing, Noordwijk, Netherlands. https://doi.org/10.1109/NAVITEC.2012.6423054