Advances in Geosciences
Advances in Geosciences
ADGEO
Articles | Volume 55
Articles | Volume 55
https://doi.org/10.5194/adgeo-55-23-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/adgeo-55-23-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 55
26 Feb 2021
 | 26 Feb 2021

Unconstrained Estimation of VLBI Global Observing System Station Coordinates

Markus Mikschi, Johannes Böhm, and Matthias Schartner

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Latest update: 15 Aug 2026
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Short summary
The coordinates of radio telescopes, which are part of the emerging VLBI Global Observing System, were estimated in a least squares unconstrained adjustment. The higher number of observations per time with better sky coverage, which these telescopes can produce, was optimally utilized by testing different intervals for the tropospheric delay estimation. We found that a short estimation interval of 15 min for the tropospheric gradients with a 45 min interval for the zenith wet delay perform best.
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