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| Titel |
The International Terrestrial Reference Frame: lessons from the past and preparation for the future. |
| VerfasserIn |
Z. Altamimi, X. Collilieux, L. Métivier, P. Rebischung |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250060675
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| Zusammenfassung |
| Since the beginning of the ITRF activities, continuous improvements
have been made in order to ensure the best attainable accuracy of the
successive ITRF solutions. These improvements are due to progress
made in both data analysis by the individual techniques and the
combination strategy. However, we are still far from the science
requirement of 1 mm and 0.1mm/yr accuracy and stability over time of
the ITRF defining parameters. A critical review of past ITRF results
(including the ITRF2008) will be summarized and plans for future
improvements will be discussed. Among other issues, the paper
synthesizes the accuracy of the frame origin and scale and the
current situation of co-location sites and local ties. Results of
data analysis of extended time series beyond the ITRF2008 time-span,
from SLR and VLBI in particular, will be used to examine the origin
and the scale temporal behavior and their consistency with ITRF2008
results. A re-evaluation of the consistency between local ties and
space geodesy data will also be undertaken. |
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