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The First Geodetic VLBI Field Test of LIFT: a 550-km-long Optical Fiber Link for Remote Antenna Synchronization

Journal
Date Issued
2016
Author(s)
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Clivati, Cecilia
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Frittelli, Matteo
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Mura, Alberto
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Levi, Filippo
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Zucco, Massimo
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Calonico, Davide
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Bertarini, Alessandra
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Artz, Thomas
Abstract
We present the first field test of the implementation of a coherent optical fiber link for remote antenna synchronization realized in Italy between the Italian Metrological Institute (INRIM) and the Medicina radio observatory of the National Institute for Astrophysics (INAF). The Medicina VLBI antenna participated in the EUR137 experiment carried out in September 2015 using, as reference systems, both the local H-maser and a remote H-maser hosted at the INRIM labs in Turin, separated by about 550 km. In order to assess the quality of the remote clock, the observed radio sources were split into two sets, using either the local or the remote H-maser. A system to switch automatically between the two references was integrated into the antenna field system. The observations were correlated in Bonn and preliminary results are encouraging since fringes were detected with both time references along the full 24 hours of the session. The experimental set-up, the results, and the perspectives for future radio astronomical and geodetic experiments are presented.
Coverage
New Horizons with VGOS. International VLBI Service for Geodesy and Astrometry 2016 General Meeting Proceedings
All editors
Behrend, Dirk; Baver, Karen D.; Armstrong, Kyla L.
Volume
2016-219016
Start page
166
Conferenece
9th International VLBI Service for Geodesy and Astrometry (IVS 2016) General Meeting "New Horizons with VGOS"
Conferenece place
Johannesburg, South Africa
Conferenece date
March 13-17, 2016
Uri
Url
Issn Identifier
0191-7811
Ads BibCode
2016ivs..conf..166P
Rights
open.access
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