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Experimental and simulation study for commercial time transfer service over geostationary satellite

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Show simple item record Walker, Jacqueline Genova, Marco 2018-04-18T13:53:35Z 2018-04-18T13:53:35Z 2013
dc.description peer-reviewed en_US
dc.description.abstract Time transfer over satellite links has been explored since the satellite era began. Currently, Two Way Satellite Time and Frequency Transfer (TWSTFT) is routinely used between national timing laboratories to align national timing standards, and the Global Positioning System (GPS) provides accurate timing signals in addition to its more familiar navigation solution. This paper reports on a method for transferring time from a reference clock over commercial geostationary satellite links with a specified low level of uncertainty at the receiving stations, using only the ephemeris information provided by the satellite operator. An initial experiment, reported here, showed that with one master station, measuring aggregate extraneous delays and transmitting positioning and delay data plus a correction factor to the slave stations, allowed transfer of a 1 pps (pulse per second) timing signal with a standard deviation of 72 to 98 ns and peak-to-peak variations of 500 to 600 ns, when measured against a GPS reference. Subsequent analysis of the experiment uncovered some issues with the implementation, suggesting that these results could be substantially improved upon. Furthermore, a simulation of the system that modeled the extraneous delays produced results similar to those obtained in the experiment. en_US
dc.language.iso eng en_US
dc.publisher Taylor and Francis Ltd en_US
dc.relation.ispartofseries NCSLI Measure: The Journal of Measurement Science;8 (2), pp. 62-69
dc.rights This is an Author's Manuscript of an article whose final and definitive form, the Version of Record, has been published in NCSLI Measure: The Journal of Measurement Science 2013 copyright Taylor & Francis, available online at: en_US
dc.subject time transfer en_US
dc.subject satellite links en_US
dc.title Experimental and simulation study for commercial time transfer service over geostationary satellite en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US 2018-04-18T13:42:04Z
dc.description.version ACCEPTED
dc.identifier.doi 10.1080/19315775.2013.11721642
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 1558964
dc.internal.copyrightchecked Yes
dc.identifier.journaltitle NCSLI Measure: The Journal of Measurement Science
dc.description.status peer-reviewed

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