Vlbi global observing system vgos

Results 1 to 10 of about 160 (88)

New Cable Delay Measurement System for VGOS Stations [PDF]

Sensors, 2022
This paper presents the new cable delay measurement system (CDMS) designed at Yebes Observatory (IGN, Spain), which is required for the VLBI Global Observing System (VGOS) stations.
Pablo García-Carreño +6 more
doaj +5 more sources

Optimal antenna locations of the VLBI Global Observing System for the estimation of Earth orientation parameters [PDF]

Earth, Planets and Space, 2020
To support monitoring subtle effects in the Earth system such as a mean sea level rise of 3 mm/year, a next-generation VLBI system, the VLBI Global Observing System (VGOS), has been developed and a new VGOS station network is being built.
Matthias Schartner, Johannes Böhm, Axel Nothnagel +2 more
doaj +4 more sources

On the Integration of VLBI Observations to GENESIS into Global VGOS Operations

Remote Sensing
The upcoming European Space Agency (ESA) satellite mission GENESIS is an Earth-orbiting satellite carrying instruments of all four space geodetic techniques.
David Schunck +2 more
doaj +4 more sources

A Tri-Band Cooled Receiver for Geodetic VLBI [PDF]

Sensors, 2021
This paper shows a simultaneous tri-band (S: 2.2–2.7 GHz, X: 7.5–9 GHz and Ka: 28–33 GHz) low-noise cryogenic receiver for geodetic Very Long Baseline Interferometry (geo-VLBI) which has been developed at Yebes Observatory laboratories in Spain.
José A. López-Pérez +16 more
doaj +2 more sources

Observing UT1-UTC with VGOS [PDF]

Earth, Planets and Space, 2021
We present first results for the determination of UT1-UTC using the VLBI Global Observing System (VGOS). During December 2019 through February 2020, a series of 1 h long observing sessions were performed using the VGOS stations at Ishioka in Japan and ...
Rüdiger Haas +3 more
doaj +2 more sources

Unconstrained Estimation of VLBI Global Observing System Station Coordinates [PDF]

Advances in Geosciences, 2021
The International VLBI Service for Geodesy and Astrometry (IVS) is currently setting up a network of smaller and thus faster radio telescopes observing at broader bandwidths for improved determination of geodetic parameters. However, this new VLBI Global
M. Mikschi, J. Böhm, M. Schartner, M. Schartner +3 more
doaj +3 more sources

Initial Results Obtained with the First TWIN VLBI Radio Telescope at the Geodetic Observatory Wettzell [PDF]

Sensors, 2015
Geodetic Very Long Baseline Interferometry (VLBI) uses radio telescopes as sensor networks to determine Earth orientation parameters and baseline vectors between the telescopes.
Torben Schüler +8 more
doaj +2 more sources

Favorable locations for new VGOS antennas in India depending on the assessment of geodetic parameters and environmental factors

Earth, Planets and Space, 2023
VLBI simulation studies are carried out to investigate the impact of any proposed station or strategy on the geodetic parameters, such as Earth Orientation Parameters (EOP) and Terrestrial Reference Frame (TRF). In general, such studies are performed for
Sujata Dhar +5 more
doaj +2 more sources

A Comparative Study of VTEC Estimates Derived From S/X VLBI and VGOS Observations

Space Weather
The ionosphere, which strongly varies in time and space, is one of the largest error sources for microwave measurements, if not accounted for accurately.
Arno Rüegg, Grzegorz Kłopotek, Benedikt Soja +2 more
doaj +2 more sources

Optimizing schedules for the VLBI global observing system. [PDF]

J Geod, 2020
Schartner M, Böhm J.
europepmc +2 more sources

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