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Experience from geodetic very long baseline interferometry observations at Onsala using a digital backend

Niko Kareinen (Institutionen för rymd- och geovetenskap, Rymdgeodesi och geodynamik) ; Rüdiger Haas (Institutionen för rymd- och geovetenskap, Rymdgeodesi och geodynamik)
Journal of Geodetic Science (2081-9919). Vol. 5 (2015), 1, p. 26-34.
[Artikel, refereegranskad vetenskaplig]

The Onsala Space Observatory has installed a modern digital backend for geodetic and astronomical Very Long Baseline Interferometry (VLBI). This system consists of a Digital Base-Band Converter (DBBC) and a Mark 5B+ recorder. From 2011 until late 2014 this new system was run for geodetic VLBI observations in paral- lel with the old system consisting of a Mark 4 rack and Mark 5A recording system. Several of these observed ses- sions were correlated at the correlator in Bonn including both data sets. We present results from the analysis and comparison of these sessions. Both the original observed delays and corresponding geodetic parameters are com- pared. No significant differences are detected, for either the raw observations or for the geodetic parameters. This shows that the digital backend can be used operationally for geodetic VLBI observations.

Nyckelord: VLBI, digital base-band converter, geodetic very long baseline interferometry, Mark 4, VLBI2010 Global Observing System



Denna post skapades 2015-09-19. Senast ändrad 2016-05-24.
CPL Pubid: 222846

 

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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Rymdgeodesi och geodynamik (2010-2017)

Ämnesområden

Annan geovetenskap och miljövetenskap

Chalmers infrastruktur

Onsala rymdobservatorium