Experience from geodetic very long baseline interferometry observations at Onsala using a digital backend
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 observ...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2015-04-01
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| Series: | Journal of Geodetic Science |
| Subjects: | |
| Online Access: | http://www.degruyter.com/view/j/jogs.2015.5.issue-1/jogs-2015-0004/jogs-2015-0004.xml?format=INT |
| Summary: | 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 parallel
with the old system consisting of a Mark 4 rack and
Mark 5A recording system. Several of these observed sessions
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 compared.
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. |
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| ISSN: | 2081-9943 |