Inventory of Error Sources Limiting GNSS-based Frequency Transfer

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Original languageEnglish
Title of host publication2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665497183
Publication statusPublished - 2022
Event2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Paris, France
Duration: 24 Apr 202228 Apr 2022

Publication series

Name2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings

Abstract

Global Navigation Satellite System (GNSS) frequency transfer technique requires two GNSS receivers, each connected to an external frequency signal of the clocks or oscillator to be compared. Hence, the estimated receiver clock difference is the parameter of interest. The task is to eliminate the errors influencing the estimation process, because they degrade the stability and the uncertainty level of the transferred frequency. In this contribution, we review the most dominant error sources mentioned in literature and categorize them into hardware errors and signal propagation errors. The focus is directed further on sub-daily errors such as multipath and tropospheric delays, for which we carry out simulations of their effect on the frequency instability and the response in the frequency domain by computing the power spectrum density. Additionally, we analyze real data of two baselines with lengths of about 2m and 295m where all the receivers are connected to the same UTC frequency signal. The frequency instability is estimated to be in order of 10-17 for the first baseline and 10-16 for the second, where we characterize the reasons for this degradation through estimating the power spectrum of the clock difference time series.

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Inventory of Error Sources Limiting GNSS-based Frequency Transfer. / Elmaghraby, Ahmed; Krawinkel, Thomas; Schön, Steffen.
2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2022. (2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings).

Research output: Chapter in book/report/conference proceedingConference contributionResearch

Elmaghraby, A, Krawinkel, T & Schön, S 2022, Inventory of Error Sources Limiting GNSS-based Frequency Transfer. in 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings. 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings, Institute of Electrical and Electronics Engineers Inc., 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022, Paris, France, 24 Apr 2022. https://doi.org/10.1109/EFTF/IFCS54560.2022.9850608
Elmaghraby, A., Krawinkel, T., & Schön, S. (2022). Inventory of Error Sources Limiting GNSS-based Frequency Transfer. In 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings (2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EFTF/IFCS54560.2022.9850608
Elmaghraby A, Krawinkel T, Schön S. Inventory of Error Sources Limiting GNSS-based Frequency Transfer. In 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2022. (2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings). doi: 10.1109/EFTF/IFCS54560.2022.9850608
Elmaghraby, Ahmed ; Krawinkel, Thomas ; Schön, Steffen. / Inventory of Error Sources Limiting GNSS-based Frequency Transfer. 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2022. (2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings).
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