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http://hdl.handle.net/20.500.12386/27645
Title: | Comparing remote atomic clocks via VLBI networks and fiber optic links: the LIFT/MetGeSp perspective | Authors: | RICCI, ROBERTO NEGUSINI, MONIA PERINI, FEDERICO BORTOLOTTI, CLAUDIO ROMA, MAURO Ambrosini, R. MACCAFERRI, GIUSEPPE STAGNI, Matteo Nanni, M. KRAVCHENKO, EVGENIYA Calonico, D. Clivati, C. Tampellini, A. Levi, F. MURA, Alessandro Bianco, G. Siciliani de Cumis, M. Santamaria Amato, L. |
Issue Date: | 2018 | Journal: | POS PROCEEDINGS OF SCIENCE | Volume: | 14th European VLBI Network Symposium & Users Meeting (EVN 2018) | First Page: | 83 | Abstract: | Very Long Baseline Interferometry experiments require an extremely precise synchronization between the atomic clocks keeping the time and frequency standards at radiotelescope observatories. Recently the availability of fiber optic links from a few radio observatories and their national metrological institutes has made possible the streaming of extremely stable frequency standards via optical atomic clocks (even two order of magnitudes better than Rubidium or Hydrogen maser standards). Firstly, I will present the infrastructure of the Italian Link for Frequency and Time (LIFT) and results of the MetGesp project aimed at finally creating a common clock between two of the antennas of the VLBI Italian Network. Secondly, I will show the results of VLBI experiments in which the phase rms noise was used to accurately compare the synchronicity of atomic clocks located at a few EVN sites (Medicina, Noto, Yebes, Torun). VLBI clock timing proves a valid alternative to satellite-based techniques such as Global Navigation Satellite System or Two-Way Satellite Frequency and Time Transfer. | Conference Name: | 14th European VLBI Network Symposium & Users Meeting EVN2018 | Conference Place: | Granada, Spain | Conference Date: | 8-11 October, 2018 | URI: | http://hdl.handle.net/20.500.12386/27645 | URL: | https://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=344 https://pos.sissa.it/344/083/ |
ISSN: | 1824-8039 | DOI: | 10.22323/1.344.0083 | Bibcode ADS: | 2018evn..confE..83R | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
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EVN2018_083.pdf | Pdf editoriale | 234.15 kB | Adobe PDF | View/Open |
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