About: Photonic Services for Time and Frequency Transmission in the Czech Republic

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In every country exists a time and frequency laboratory that operates a certain set of atomic clocks with goal to provide national approximation of UTC time scale. Generally, higher number of these interconnected clocks (Caesium primary standards and Hydrogen masers) might improve accuracy and stability of the time scale. The term %22interconnection%22 in this context means that we have to transfer time between them despite of their location at geographically distant places - the common method is a dedicated two-way satellite link or a GPS based system, however utilization of fibre links constantly increases. And present all-optical networks allow stable transmission of information. However to increase stability specific measures are necessary. Contribution summarizes the reasons for building of infrastructure dedicated to transfer of accurate time and frequency in the Czech Republic. It shows achieved results and indicated necessary steps for further stability improvements. In every country exists a time and frequency laboratory that operates a certain set of atomic clocks with goal to provide national approximation of UTC time scale. Generally, higher number of these interconnected clocks (Caesium primary standards and Hydrogen masers) might improve accuracy and stability of the time scale. The term %22interconnection%22 in this context means that we have to transfer time between them despite of their location at geographically distant places - the common method is a dedicated two-way satellite link or a GPS based system, however utilization of fibre links constantly increases. And present all-optical networks allow stable transmission of information. However to increase stability specific measures are necessary. Contribution summarizes the reasons for building of infrastructure dedicated to transfer of accurate time and frequency in the Czech Republic. It shows achieved results and indicated necessary steps for further stability improvements. (en)
Title	Photonic Services for Time and Frequency Transmission in the Czech Republic Photonic Services for Time and Frequency Transmission in the Czech Republic (en)
skos:prefLabel	Photonic Services for Time and Frequency Transmission in the Czech Republic Photonic Services for Time and Frequency Transmission in the Czech Republic (en)
skos:notation	RIV/63839172:_____/13:10130207!RIV14-MSM-63839172
http://linked.open...avai/predkladatel	CESNET, zájmové sdružení právnických osob
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(LM2010005)
http://linked.open...iv/cisloPeriodika	421
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Vojtěch, Josef Smotlacha, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	CESNET - zájmové sdružení právnických osob
http://linked.open...dnocenehoVysledku	96121
http://linked.open...ai/riv/idVysledku	RIV/63839172:_____/13:10130207
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Open transmission system; Photonic service; Atomic clock comparison; Transmission of basic quantities; Precise time transmission (en)
http://linked.open.../riv/klicoveSlovo	Atomic clock comparison Open transmission system Precise time transmission Transmission of basic quantities Photonic service
http://linked.open...odStatuVydavatele	CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV	[BC28BF402055]
http://linked.open...i/riv/nazevZdroje	Applied Mechanics and Materials
http://linked.open...in/vavai/riv/obor	JA
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Large Infrastructure CESNET
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	2013
http://linked.open...iv/tvurceVysledku	Smotlacha, Vladimír Vojtěch, Josef
issn	1022-6680
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.4028/www.scientific.net/AMM.421.721

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