<div class="csl-bib-body">
<div class="csl-entry">Sert, H., Wolf, H., Hugentobler, U., Böhm, J., Karatekin, Ö., & Dehant, V. (2022, May 24). <i>Transferring UT1-UTC from VLBI to Galileo orbits with an onboard VLBI transmitter</i> [Poster Presentation]. ESA Living Planet Symposium 2022, Bonn, Germany. http://hdl.handle.net/20.500.12708/153421</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/153421
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dc.description.abstract
Improving and homogenizing time and space references on Earth and in space with an accuracy of 1 mm and long-term stability of 0.1 mm/yr is relevant for many scientific and societal endeavors, such as quantifying sea-level change. Reaching this goal is only possible by referencing the various geodetic sensors to one another on a unique well-calibrated platform. For instance, GNSS satellites require the Earth rotation angle from VLBI as an input parameter. Alternatively, an onboard VLBI transmitter (VT) on the satellites creates a space-tie between the VLBI and GNSS methods and can allow transferring the UT1-UTC information by jointly observing quasars and the VT. Previous work showed the feasibility of such a system where the UT1-UTC precisions from VLBI are assumed to be 20 and 40 microseconds for long and short baselines, respectively. In this study, Monte-Carlo simulations are carried out to obtain more realistic UT1-UTC precisions from VLBI Intensive sessions at four baselines, which are then transferred to the GNSS satellites. The quality of the transfer is assessed.
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dc.description.sponsorship
Fonds zur Förderung der wissenschaftlichen Forschung (FWF)
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dc.language.iso
en
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dc.subject
VLBI transmitter
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dc.subject
UT1-UTC
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dc.subject
Intensive Session
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dc.title
Transferring UT1-UTC from VLBI to Galileo orbits with an onboard VLBI transmitter
