DOI: 10.5281/zenodo.17432063
title: DTRF2020-u2023

description: When using this data please cite Seitz, M., Bloßfeld, M., Angermann, D., Rudenko, S., Zeitlhöfler, J., & Seitz, F. (2025). DTRF2020-v2023 [Data set]. Zenodo. https://doi.org/10.5281/zenodo.17432063

More information on the DTRF2020-u2023 and to individual stations are given at the webpage https://dtrf.dgfi.tum.de/en/dtrf2020/

Reference paper

Seitz, M., Bloßfeld, M., Glomsda, M. et al. DTRF2020: The ITRS 2020 realization of DGFI-TUM. J Geod 100, 15 (2026). https://doi.org/10.1007/s00190-026-02032-1

SummaryThe DTRF2020-u2023 is the update of DTRF2020, an independent realization of the International Terrestrial Reference System, ITRS (Petit and Luzum, 2010), by DGFI-TUM. It was computed in 2024/2025 and is based on input data provided by the IAG Scientific Services of the four space geodetic techniques—VLBI, SLR, GNSS, and DORIS (IVS, ILRS, IGS, IDS)—for the DTRF2020 and the corresponding update series covering the period 2021.0–2024.0. The full observation time spans of the individual techniques used in DTRF2020-u2023 cover 30 to 44 years.

The DTRF2020-u2023 update is characterized by the following improvements compared to DTRF2020 :



Three more years of observation data for each technique.

New stations, satellites and technically improved stations.

The technique-specific input data series for the update are calculated according to the latest general and technique-specific models. This comprises



the incorporation of revised GNSS receiver antenna calibration data, involving corrections to DTRF2020 station positions based on mean coordinate differences for the corresponding stations, determined and provided by the IGS,

new mean range biases for SLR stations.



The DTRF2020-u2023 origin is realized from the full history of SLR input series.

The DTRF2020-u2023 scale is realized from the full history of VLBI and GNSS input series. 
description: Data Format Description



SINEX files of DTRF2020-u2023 per technique with full variance-covariance matrix (note: there is a list of GNSS stations without DOMES numbers)



DTRF2020-u2023_{technique}.snx.gz



EOP file of DTRF2020-u2023 in IERS 20 C04 format



DTRF2020-u2023_EOP.20C04_format.txt



NTL corrections in [x,y,z] and [North,East,up] applied in DTRF2020-u2023 as time series per station. The time series refer to the center of mass of the Earth (CM). In addition, we provide NTL series referring to the center of figure (CF) of the Earth in the same format. Both types of series are provided from the respective start of the observation period of a technique until 2021.0. The NTL series are reduced by offset and drift obtained for the valid observation time span of the individual station. The offsets and drifts are also provided (see below).



NTL_{CM|CF}_{technique}_{xyz|neu}.tar



Mean offsets and drifts removed from individual NTL correction time series before applying them in DTRF2020-u2023 (for atmospheric, hydrological and oceanic effect and the sum) in [x,y,z] and [North,East,up]. The values are provided for the applied CM-referred series and for the CF-referred series (see above).



NTL_{CM|CF}_{technique}_reduced_offsets_and_drifts.tar



PSD corrections as time series in [x,y,z] applied in DTRF2020-u2023 for stations affected by a significant post-seismic deformation. For solution numbers whose observation period extents beyond the end of the DTRF2020-2023 period, long time series are provided up to epoch 2031-01-01.



PSD_{technique}.tar



Station position residual time series in [North, East, up] resulting from 7-parameter similarity transformations of technique-specific solution series with respect to DTRF2020-u2023. Important note: The solution series for the individual techniques are based on the NEQs that are used for the DTRF2020-u2023 calculation, i.e., on NEQs reduced by the NTL displacements.



Station_Residual_Time_Series_{technique}.tar



SLR translation time series with respect to DTRF2020



SLR_translation_wrt_DTRF2020-u2023.txt