ITRF2020: an augmented reference frame refining the modeling of nonlinear station motions

Z Altamimi, P Rebischung, X Collilieux, L Métivier… - Journal of …, 2023 - Springer
To better describe the shape of the constantly deforming Earth's surface, the ITRF2020 is
provided as an augmented terrestrial reference frame that precisely models nonlinear …

Overview and status of the international celestial reference frame as realized by VLBI

A de Witt, P Charlot, D Gordon, CS Jacobs - Universe, 2022 - mdpi.com
Accurate measurement of angular positions on the sky requires a well-defined system of
reference that is realized with accessible objects. The purpose of this study is to review the …

Detection of a new large free core nutation phase jump

Z Malkin, S Belda, S Modiri - Sensors, 2022 - mdpi.com
We announce the detection of a new large jump in the phase of the free core nutation (FCN).
This is only the second such large FCN phase jump in more than thirty years of FCN …

Effects of non-tidal loading applied in VLBI-only terrestrial reference frames

M Glomsda, M Seitz, M Bloßfeld, F Seitz - Journal of Geodesy, 2023 - Springer
We investigate the impact of the reduction of non-tidal loading (NTL) in the computation of
secular terrestrial reference frames (TRFs) from Very Long Baseline Interferometry (VLBI) …

Determination of Earth rotation parameters by Beidou navigation satellite system

S Jia, B Li, H Ge, J Qiao - Advances in Space Research, 2023 - Elsevier
Abstract Earth Rotation Parameters (ERP) play an important role in astrometry, geophysics,
and space geodesy. Beidou Navigation Satellite System (BDS) has three orbital types of …

Assessment of the Improvement in Observation Precision of GNSS, SLR, VLBI, and DORIS Inputs from ITRF2014 to ITRF2020 Using TRF Stacking Methods

J Zhang, C Huang, L Lian, S Zhang - Remote Sensing, 2024 - mdpi.com
International terrestrial reference frame (ITRF) input data, generated by Global Navigation
Satellite Systems (GNSS), Satellite Laser Ranging (SLR), Very Long Baseline Interferometry …

国际地球参考框架ITRF2020 简介与评析

明锋, 杨元喜, 曾安敏, 李文浩 - 地球科学进展, 2023 - adearth.ac.cn
国际地球自转与参考系统服务组织于2022 年4 月发布了最新的国际地球参考框架ITRF2020
(the International Terrestrial Reference Frame 2020). 由于采用了更长的时间序列 …

On more than two decades of Celestial Reference Frame VLBI observations in the deep south: IVS-CRDS (1995–2021)

S Weston, A de Witt, H Krásná, K Le Bail… - Publications of the …, 2023 - cambridge.org
The International VLBI Service for Geodesy and Astrometry (IVS) regularly provides high-
quality data to produce Earth Orientation Parameters (EOP), and for the maintenance and …

[PDF][PDF] First results of project on six-hourly EOP piecewise linear offset parameterization

A Nothnagel, S Böhm, R Dach, M Glomsda… - IVS 2022 General …, 2023 - vlbi.at
Continuous piecewise linear functions are a helpful way of parameterizing time series in
least-squares adjustments employing a Gauss-Markov model. In this publication, we present …

[PDF][PDF] Comparison of simultaneous VGOS and legacy VLBI sessions

M Glomsda, M Seitz… - In: Kyla L. Armstrong, Dirk …, 2023 - mediatum.ub.tum.de
Abstract The VLBI Global Observing System (VGOS) represents the next-generation VLBI
system, which consists of a growing network of small and fast-slewing radio antennas …