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Karolina Szafranek, Andrzej Araszkiewicz, Janusz Bogusz, Marusz Figurski
Monitoring of long-term changes in GBAS daily solutions for the maintenance of the Polish reference frame
| Conference Information: |
9th International Conference “Environmental Engineering”, 22–23 May 2014, Vilnius, LITHUANIA |
| Source: |
ICEE-2014 - International Conference on Environmental
Engineering |
| Book Series: |
International Conference on Environmental Engineering
(ICEE) Selected papers |
| ISSN: |
eISSN 2029-7092 online |
| ISBN: |
eISBN 978-609-457-640-9 |
| ISBN: |
ISBN 978-609-457-690-4 CD |
| Year: |
2014 |
| Publisher: |
Vilnius Gediminas Technical University Press Technika |
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Abstract
The paper deals with the problem of the reliability of reference systems realized by
the permanent GNSS (Global Navigation Satellite System) networks. The GNSS technique
is used for realization of global reference system ITRS (International Terrestrial
Reference System), (e.g. ITRF2008 – International Terrestrial Reference Frame) and
European reference system ETRS89 (European Terrestrial Reference System), (ETRF2000 –
European Terrestrial Reference Frame). In 2012 Polish government introduced the PL-ETRF2000
frame, which is realized in practice by the selected number of EPN (EUREF Permanent Network)
stations. There are also some accuracy criteria (0.01 m for horizontal position and 0.02 m for
vertical component) related to the role of ASG-EUPOS (Active Geodetic Network – European Position
Determination System, Polish GBAS (Ground Based Augmentation System)) as the fundamental
and base geodetic networks.
In the frame of ASG+ project (“The supporting modules for ASG-EUPOS
system real-time services”) coordinates monitoring module has been
developed. Its main goal is to investigate the reliability of instantaneous
ASG-EUPOS coordinates obtained using various IGS products (final, rapid, ultra rapid)
by comparing them to the reference values. The paper focuses on the method of final
solutions determination as they are the most reliable ones and which delay
(about 2 weeks) is acceptable for reference frame monitoring purpose.
This fully automatic module enables analysis of instantaneous and archive
coordinates to estimate the stability of each station’s position and the reliability
of the whole reference frame. As the independent element the graphical presentation
serves. This can be found at the web page of the Centre of Applied Geomatics (CAG) at www.cgs.wat.edu.pl.
Despite the fact that the module has been developed for Polish national system, its construction is general and
could be used for monitoring of other GNSS networks.
Keywords: GNSS; reference station; monitoring, ASG-EUPOS.
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