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Network time protocol from a distributed timescale traceable to UTC
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2016 (English)In: Proceedings of the Annual Precise Time and Time Interval Systems and Applications Meeting, PTTI, 2016, 187-192 p.Conference paper, (Refereed)
Abstract [en]

A nationwide robust distributed time scale and network time and frequency distribution infrastructure is implemented in Sweden. The system has been under evaluation since May 2015 and was started as an active service in December 2015. The six local time scales are traceable to UTC within ± 250 ns and NTP time is distributed using customized high performance servers. All output is externally monitored for independent quality and performance assessment. © 2016 The Institute of Navigation, Inc.

Place, publisher, year, edition, pages
2016. 187-192 p.
Keyword [en]
Active service, Distributed time, Local time, Network time protocol, Performance assessment, Time and frequencies, Time-scales, Platinum alloys
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27662Scopus ID: 2-s2.0-84964992785OAI: oai:DiVA.org:ri-27662DiVA: diva2:1059325
Conference
47th Annual Precise Time and Time Interval Systems and Applications Meeting, PTTI 2016, 25 January 2016 through 28 January 2016
Note

References: Dahlman, E., Parkvall, S., Skold, J., (2013) 4G: LTE/LTE-Advanced for Mobile Broadband, , Academic press; Ebenhag, S.C., Jaldehag, K., Rieck, C., Jarlemark, P., Hedekvist, P.O., Löthberg, P., Fordell, T., Merimaa, M., Time transfer between UTC(SP) and UTC(MIKE) using frame detection in fiber-optical communication networks (2011) Precise Time and Time Interval (PTTI) Systems and Applications Meeting, pp. 431-441; Hanssen, J., Ekstrom, C., Ebenhag, S.C., Jaldehag, K., Evaluation of time transfer units for time and frequency transfer in optical fibers utilizing a passive technique based on SONET/SDH (2012) Precise Time and Time Interval (PTTI) Systems and Applications Meeting, pp. 371-376; Koppang, P., Leland, R., (1995) Steering of Frequency Standards by the se of Linear Quadratic Gaussian Control Theory, , Naval observatory Washington

Available from: 2016-12-22 Created: 2016-12-21 Last updated: 2016-12-22Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
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