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Rapid UT1 Estimation by Combining VLBI Intensives with GNSS

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IAG 150 Years

Part of the book series: International Association of Geodesy Symposia ((IAG SYMPOSIA,volume 143))

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Abstract

We present a Kalman filter for combining dUT1 from the VLBI Intensive sessions with GNSS results for rapid estimation of dUT1. In order to be able to also combine polar motion, pre-reduced normal equations for the Intensive sessions are used in the Kalman filter. We validate our results by comparing with dUT1 estimates from standard global 24-h VLBI sessions. It is found that the Kalman filter is able to use the polar motion measured by GNSS to properly correct the errors in dUT1 caused by inaccurate a priori polar motion. Furthermore, we investigate how the coordinates of the Tsukuba VLBI station can be handled in the analysis after the Tōhoku (Japan) Earthquake in 2011.

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Notes

  1. 1.

    http://www.iers.org/nn_10902/IERS/EN/Organization/Workshops/Retreat2013.html.

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Acknowledgements

We are grateful to the VLBI stations contribution to the Intensives and to the International VLBI Service for Geodesy and Astrometry (Schuh and Behrend 2012) for providing the data. This work was supported by the Austrian science fund (FWF), project number P24187-N21.

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Authors and Affiliations

  1. Department 1: Geodesy and Remote Sensing, Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, 14473 Potsdam, Germany

    Tobias Nilsson, Maria Karbon, Benedikt Soja, Virginia Raposo-Pulido, Robert Heinkelmann, Julian Mora Diaz, Cuixian Lu, Li Liu & Harald Schuh

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  1. Tobias Nilsson
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  2. Maria Karbon
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  3. Benedikt Soja
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  4. Virginia Raposo-Pulido
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  5. Robert Heinkelmann
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  6. Julian Mora Diaz
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  7. Cuixian Lu
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  8. Li Liu
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  9. Harald Schuh
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Correspondence to Tobias Nilsson .

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Editors and Affiliations

  1. School of Surveying Information, University of New South Wales, Sydney NSW, Australia

    Chris Rizos

  2. c/o Editorial Board 190, Heidelberg, Baden-Württemberg, Germany

    Pascal Willis

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Nilsson, T. et al. (2015). Rapid UT1 Estimation by Combining VLBI Intensives with GNSS. In: Rizos, C., Willis, P. (eds) IAG 150 Years. International Association of Geodesy Symposia, vol 143. Springer, Cham. https://doi.org/10.1007/1345_2015_105

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