Analysis of VGOS sessions: Evaluation of performance with different software

VGOS (VLBI Global Observation System) is a new generation VLBI system. It has been developed since 2005 and it is based on the so-called broadband delay that uses four or more frequency bands. High data rate observations are taken by fast-slewing antennas, smaller than those used in the current legacy S/X infraestructure. These improvements in instrumentation are aimed at obtaining geodetic products more accurate.  In order to test the analysis of these new data, the historical VGOS sessions have been analyzed with different software. Difficulties in the current processing and similarities with the S/X generation processing are studied. Results in terms of the accuracy in EOP (Earth Orientation Parameters) estimation and coordinates repeatability are also discussed in this contribution.

Esther Azcue[1], Víctor Puente[1], Mariana Moreira[2], Elena Martínez-Sánchez[3]

Keywords VGOS, VLBI, VieVS, Where, IVS

Type Proceeding

Event IVS General Assembly 2022 (28 March to 1 April 2022)

Journal reference: International VLBI Service for Geodesy and Astrometry General Meeting 2022 Proceedings, edited by Kyla L. Armstrong, Karen D. Baver, and Dirk Behrend NASA/CP-20220018789, 2023. pp. 197-201.

https://ivscc.gsfc.nasa.gov/publications/gm2022/NASA-CP-20220018789-IVS-2022-General-Meeting-Proceedings.pdf

[1] National Geographic Institute of Spain, Madrid, Spain

[2] Estação RAEGE de Santa Maria, Associação RAEGE Açores, Santa Maria – Azores, Portugal | Atlantic International Research Centre, Terceira – Azores, Portugal

[3] Yebes Observatory, National Geographic Institute of Spain, Yebes, Spain