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  3. 3 CONTRIBUTI IN ATTI DI CONVEGNO (Proceedings)
  4. 3.01 Contributi in Atti di convegno
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28862
Title: Comparing Remote Atomic Clocks via VLBI Networks and Fiber Optic Links: the LIFT/MetGeSp Perspective
Authors: NEGUSINI, MONIA 
RICCI, ROBERTO
PERINI, FEDERICO 
ROMA, MAURO 
BORTOLOTTI, CLAUDIO 
MACCAFERRI, GIUSEPPE
STAGNI, Matteo 
AMBROSINI, ROBERTO
Clivati, Cecilia
Calonico, Davide
Tampellini, Anna
Levi, Filippo
Issue Date: 2019
Volume: International VLBI Service for Geodesy and Astrometry 2018 General Meeting Proceedings: "Global Geodesy and the Role of VGOS - Fundamental to Sustainable Development
Editors: Armstrong, Kyla L.; Baver, Karen D.; Behrend, Dirk.
First Page: 274
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 the streaming of extremely stable frequency standards via optical atomic clocks possible (even two orders of magnitudes better than Rubidium or Hydrogen maser standards). Firstly, we 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, the results are shown from VLBI experiments in which the rms phase noise was used to accurately compare the synchronicity of atomic clocks located at a few European stations (Medicina, Noto, Yebes, Torun, and Matera). VLBI clock timing proves a valid alternative to satellite-based techniques such as the Global Navigation Satellite System or the Two-Way Satellite Time and Frequency Transfer.
Conference Name: Tenth IVS General Meeting "Global Geodesy and the Role of VGOS – Fundamental to Sustainable Development"
Conference Place: Longyearbyen, Svalbard, Norway
Conference Date: 3-8 June, 2018
URI: http://hdl.handle.net/20.500.12386/28862
URL: https://ivscc.gsfc.nasa.gov/publications/gm2018/IVS-2018-General-Meeting-Proceedings.pdf
Bibcode ADS: 2019ivs..conf..274N
Fulltext: open
Appears in Collections:3.01 Contributi in Atti di convegno

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