VGOS VLBI Intensives between MACGO12M and WETTZ13S for the rapid determination of UT1-UTC

Autor:	Schartner, Matthias, Petrov, Leonid, Plötz, Christian, Lemoine, Frank G., Terrazas, Eusebio, Soja, Benedikt
Rok vydání:	2023
Předmět:	Physics - Geophysics Astrophysics - Earth and Planetary Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1007/1345_2023_222
Popis:	In this work, we present a status update and results of the designated research and development VLBI Intensive program VGOS-INT-S, observed between MACGO12M and WETTZ13S for the rapid determination of the Earth's phase of rotation, expressed via UT1-UTC. The main novelty of these sessions is the use of a special observation strategy, rapidly alternating between high- and low-elevation scans, enabling an improved determination of delays caused by the neutral atmosphere. Since 2021, 25 Intensive sessions have been observed successfully. In early 2022, VGOS-INT-S was among the most accurate Intensive programs with an average formal error $\sigma_{UT1-UTC}$ of 3.1 $\mu$s and a bias w.r.t. IERS C04 of 1.1 $\mu$s. Later, the session performance decreased due to multiple technical difficulties. Comment: 8 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2302.08147 Zobrazit plný text záznamu View this record from Arxiv