Results 21 to 30 of about 2,072 (163)

Contribution to the global VGOS network by potential sites in South America

Journal of Geodesy
Very-long-baseline interferometry (VLBI) networks have historically lacked enough antennas to densify the southern hemisphere adequately. This situation not only impacts directly the realization of the Celestial Reference System but also the ...
Laura I. Fernandez, Maria Eugenia Gomez
exaly   +2 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, Gerhard Kronschnabl, Christian Plötz, Alexander Neidhardt, Alessandra Bertarini, Simone Bernhart, Laura la Porta, Sebastian Halsig, Axel Nothnagel   +8 more
doaj   +2 more sources

The EUropean-VGOS Project [PDF]

, 2019
In Spring 2018 the Bonn correlation centre\ua0started a collaboration with the three European stations\ua0of Wettzell, Onsala and Yebes, equipped with\ua0both S/X- and broadband systems, to perform VGOS-like test sessions.
Alef, W., Anderson, J., Bernhart, S., de Vicente, P., González García, J., Haas, R., La Porta, L., Martí Vidal, I., Müskens, A., Nothnagel, A., Plötz, C., Rottmann, H., Savolainen, T., Schüler, T., Small, D., Wagner, J.   +15 more
openaire   +3 more sources

Current Status of the EU-VGOS Project [PDF]

, 2023
The EU-VGOS project began in 2018 with\ua0the aim of using the VGOS infrastructure in Europe\ua0to investigate methods for VGOS data processing. The\ua0project is now structured into Working Groups dealing\ua0with operations (stations), e-transfer ...
Albentosa, Ezequiel, Alef, Walter, Bernhardt, Simone, Böhm, Johannes, Bolano Gonzalez, Ruben, Choi, Yoon, Gansmoe, Thomas, Garcia Espada, Susana, Garcia Niro, Cristina, Girdiuk, Anastasiia, Gonzalz Garcia, Javier, Groøslie Wennesland, Ann Silje, Gruber, Jakob, Haas, Rüdiger, Hammargren, Roger, Heinkelmann, Robert, Jaron, Frédéric, Kareinen, Niko Petteri, Kirkvik, Ann-Silje, Krasna, Hana   +20 more
core   +5 more sources

Current Status of the EU-VGOS Project [PDF]

, 2022
The EU-VGOS project began in 2018 with the aim of using the VGOS infrastructure in Europe to investigate methods for VGOS data processing. The project is now structured into Working Groups dealing with operations (stations), e-transfer, correlation and ...
Xu, Ming H., Bernhart, Simone, Melnikov, Alexey, Porcas, Richard, Krasna, Hana; orcid:, Rottmann, Helge, Gansmoe, Thomas, Panzenböck, Olivia, Meldahl, Axel, Haas, Rüdiger; orcid:, Kareinen, Niko, Perez Victor, Marti-Vidal, Ivan, Zubko, Nataliya, Martinez, Elena, Small, Des, Kettenis, Mark, Hammargren, Roger, Modiri, Sadegh, Ezequiel Albentosa, Gonzalez Garcia, Javier, Böhm, Johannes; orcid:, Girdiuk, Anastasiia, Nothnagel, Axel Gerhard, Schuh, Harald, Petrov, Leonid, Schüler, Torben, Bolano Gonzales, Ruben, Neidhardt, Alexander, Gruber, Jakob Franz; orcid:, Plötz, Christian, Matsumoto, Saho, Alef, Walter, Garcia Miro, Cristina, Kirkvik, Ann-Silje, Wagner, Jan, Savolainen, Tuomas, Choi, Yoon Kyung, Soja, Benedikt; orcid:, Varenius, Eskil, De Vicente, Pablo, Garcia Espada, Susana, Jaron, Frederic Felix Daniel, Groøslie Wennesland, Silje A., Heinkelmann, Robert, Schartner, Matthias; orcid:, Verkouter, Marjolein; orcid:   +46 more
core   +9 more sources

VGOS Intensives Ishioka-Onsala [PDF]

, 2020
The VLBI Global Observing System (VGOS) is the VLBI contribution to GGOS. During the last years, several VGOS stations have been established, the VGOS observation program has started, and by 2021 VGOS has achieved an operational state involving nine
R. Haas, E. Varenius, Grzegorz Klopotek, Periklis-Konstantinos Diamantidis, Saho Matsumoto, M. Schartner, Jan Tobias Nilsson   +6 more
semanticscholar   +3 more sources

An Experiment to Observe GNSS Signals with the Australian VGOS Array [PDF]

Publications of the Astronomical Society of the Pacific
This paper introduces a new instrument enabling a novel combination of Earth measuring techniques: direct observations with the radio astronomical instruments to satellites of the global navigation satellite systems (GNSS).
Lucia McCallum, David Schunck, J. McCallum, T. McCarthy   +3 more
semanticscholar   +3 more sources

Estimation of VGOS Station Coordinates [PDF]

, 2020
With the number of available VGOS (VLBI Global Observing System) sessions rising, precise coordinates for the participating stations become more important.
Markus Mikschi, J. Böhm, M. Schartner
semanticscholar   +3 more sources

Gravitational deformation of ring-focus antennas for VGOS: first investigations at the Onsala twin telescopes project [PDF]

Journal of Geodesy, 2019
The receiving properties of radio telescopes used in geodetic and astrometric very long baseline interferometry (VLBI) depend on the surface quality and stability of the main reflector.
M. Lösler, R. Haas, C. Eschelbach, A. Greiwe   +3 more
semanticscholar   +2 more sources

An assessment of the accuracy of the VGOS geodetic products

, 2021
American Geophysical Union (AGU) Fall Meeting, 13-17 December 2021, New ...
Mondal, Dhiman, Elosegui, Pedro, Barrett, John, Corey, Brian E., Niell, Arthur E., Ruszczyk, Chester A., Titus, Michael A., Behrend, Dirk, Bolotin, Sergei, Gipson, John M., Macmillan, Daniel S.   +10 more
openaire   +3 more sources