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The DORIS evaluation of the DTRF2020, ITRF2020 and JTRF2020 realizations

Authors

Lemoine,  Frank
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Moreaux,  Guilhem
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Zelensky,  Nikita
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Couhert,  Alexandre
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Moyard,  John
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Capdeville,  Hugues
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Beckley,  Brian
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Lemoine, F., Moreaux, G., Zelensky, N., Couhert, A., Moyard, J., Capdeville, H., Beckley, B. (2023): The DORIS evaluation of the DTRF2020, ITRF2020 and JTRF2020 realizations, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4682


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021090
Abstract
The analysis centers of the International DORIS Service (IDS) reprocessed DORIS data from fourteen DORIS satellite from 1993 to 2021 to deliver a combined solution to the International Earth Rotation and Reference Systems Service (IERS). That IDS combined solution consists of a set of 1456 weekly solution files including station coordinates of 201 stations at 87 DORIS sites and Earth orientation parameters (EOPs). The IDS weekly combination (Moreaux et al., 2022, in press) were integrated into the different TRF realizations DTRF2020, ITRF2020, and JTRF2020. In this paper we review the DORIS performance of the three ITRF realizations. We first characterize the three realizations, comparing them to the input series IDS16, and a subsequent cumulative solution developed for precise orbit determination, DPOD2020. Next, we apply the three realizations to the orbit determination of DORIS satellites, and evaluate the POD performance. We use standard POD metrics, paying particular attention to the period 2016-2022, when the a priori ITRF realization, ITRF2014 was in extrapolation. The availability of three independent ITRF realizations affords us the opportunity to characterize the stability and consistency of the altimeter satellite orbits as far as the ITRF is concerned, particularly for those altimetry satellites that measure the change in global mean sea level (TOPEX/Poseidon, Jasons1-3, and Sentinel-6A).