Title: Assessing Time Transfer Methods for Accuracy and Reliability: Navigating the Time Transfer Trade-off Triangle
Authors: Teichel, Kristof, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 4.4, Zeit und Frequenz, ORCID: 0000-0002-7062-6864
Lehtonen, Tapio, VTT Technical Research Centre of Finland Ltd, Centre for Metrology MIKES (MIKES),Tekniikantie 1, 02150 Espoo, Finland, ORCID: 0000-0001-9413-1631
Wallin, Anders, VTT Technical Research Centre of Finland Ltd, Centre for Metrology MIKES (MIKES),Tekniikantie 1, 02150 Espoo, Finland, ORCID: 0000-0002-7947-2021
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Pages:5
Language:en
DOI:10.7795/820.20211123K
Resource Type: Text / Conference Paper
Publisher: Physikalisch-Technische Bundesanstalt ( PTB)
Rights: Private use is allowed for non-profit purposes only.
Relationships: IsVariantFormOf: DOI 10.1109/EFTF/IFCS52194.2021.9604300
Dates: Available: 2021-11-29
Classifications: DDC 004 Data processing and computer science ; INSPEC A0630F Time and frequency measurement ; INSPEC B7320K Time measurement ; INSPEC C3120H Time control ; INSPEC C5640 Protocols ; INSPEC C5670 Network performance ; INSPEC C5470 Performance evaluation and testing
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MD5 Checksum: 55ef7e58e2d8d77ebf5f58bdcffc1743
SHA256 Checksum: 5d5653ff0b50256b542262509749c17df4b4f797d8f9ddf73d2781aac92aba99
Keywords: time transfer techniques ; synchronization techniques ; NTP ; Network Time Security ; assessment ; accuracy ; evaluation
Abstract: We present a collected overview on how to assess both the accuracy and reliability levels and relate them to the required effort, for different digital methods of synchronizing clocks. The presented process is intended for end users who require time synchronization but are not certain about how to judge at least one of the aspects. It can not only be used on existing technologies but should also be transferable to many future approaches. We further relate this approach to several examples. We discuss in detail the approach of medium-range White Rabbit connections over dedicated fibers, a method that occupies an extreme corner in the evaluation, where the effort is exceedingly high, but also yields excellent accuracy and significant reliability.
Other: EMPIR projects are co-funded by the European Union’s (EU) Horizon 2020 research and innovation programme and the EMPIR participating states.
Citation: K. Teichel, T. Lehtonen and A. Wallin. Assessing Time Transfer Methods for Accuracy and Reliability: Navigating the Time Transfer Trade-off Triangle. Physikalisch-Technische Bundesanstalt (PTB), 2021. DOI: https://doi.org/10.7795/820.20211123K
Remark: This conference paper is the digital edition of a contribution at the 2021 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS), DOI: https://doi.org/10.1109/EFTF/IFCS52194.2021.9604300
Funding: European Commission (EC), ISNI: 0000 0001 2162 673X, Grant Title: Metrology for the next-generation digital substation instrumentation, Grant Number: EMPIR 17IND06 FutureGrid II