GGOS Bureau of Products and Standards: Description and Promotion of Geodetic Products

Angermann, D; Gruber, Thomas; Gerstl, M; Heinkelmann, Robert; Hugentobler, Urs; Sánchez, Laura; Steigenberger, Peter; Gross, R. S.; Heki, Kosuke; Marti, Urs; Schuh, Harald; Sehnal, M.; Thomas, Maik

doi:10.1007/1345_2022_144

Cited by 2 publications

References 12 publications

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Emphasizing the Value of Geodesy to Science and Society Through IAG-GGOS

Sehnal,

Sánchez,

Angermann

et al. 2024

International Association of Geodesy Symposia

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Without geodesy – the science that determines the shape of the Earth, its gravity field, and its rotation as functions of space and time – accurate positioning would not be possible. Geodetic observation techniques, analysis infrastructure, and products provided by the International Association of Geodesy (IAG) are fundamental to Earth system research and are the backbone for location-based applications. IAG’s Global Geodetic Observing System (GGOS) is a collaborative effort of the global geodesy community aimed at providing consistent and openly accessible geodetic Earth observations. In addition, GGOS supports activities and projects that promote the importance of geodesy to science and society. This paper summarizes recent GGOS initiatives and achievements in strengthening the awareness of the value of geodesy.

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Emphasizing the Value of Geodesy to Science and Society Through IAG-GGOS

Sehnal,

Sánchez,

Angermann

et al. 2024

International Association of Geodesy Symposia

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Combination strategy for consistent final, rapid and predicted Earth rotation parameters

Kehm

Hellmers

Bloßfeld

et al. 2023

J Geod

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The accurate knowledge of the Earth’s orientation and rotation in space is essential for a broad variety of scientific and societal applications. Among others, these include global positioning, near-Earth and deep-space navigation, the realisation of precise reference and time systems as well as studies of geodynamics and global change phenomena. In this paper, we present a refined strategy for processing and combining Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), Global Navigation Satellite Systems (GNSS), and Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) observations at the normal equation level and formulate recommendations for a consistent processing of the space-geodetic input data. Based on the developed strategy, we determine final and rapid Earth rotation parameter (ERP) solutions with low latency that also serve as the basis for a subsequent prediction of ERPs involving effective angular momentum data. Realising final ERPs on an accuracy level comparable to the final ERP benchmark solutions IERS 14C04 and JPL COMB2018, our strategy allows to enhance the consistency between final, rapid and predicted ERPs in terms of RMS differences by up to 50% compared to existing solutions. The findings of the study thus support the ambitious goals of the Global Geodetic Observing System (GGOS) in providing highly accurate and consistent time series of geodetic parameters for science and applications.

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GGOS Bureau of Products and Standards: Description and Promotion of Geodetic Products

Cited by 2 publications

References 12 publications

Emphasizing the Value of Geodesy to Science and Society Through IAG-GGOS

Emphasizing the Value of Geodesy to Science and Society Through IAG-GGOS

Combination strategy for consistent final, rapid and predicted Earth rotation parameters

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