Legacy fostering the twins. Connecting the S/X and VGOS telescope network generations
Licentiate thesis, 2024
With the VLBI Global Observing System (VGOS) being the next step in the development of geodetic Very Long Baseline Interferometry (VLBI), it is necessary to connect the new VGOS network to existing legacy S/X telescopes. Specially designed short-baseline interferometry sessions aim to obtain local-tie vectors between these telescope generations at observatories that have both legacy S/X and new generation VGOS telescopes.
At the Onsala Space Observatory (OSO), this is being done by short-baseline interferometry between the VGOS Onsala Twin Telescopes ONSA13SW and ONSA13NE, and the legacy antenna ONSALA60. Similarly, short-baseline interferometry sessions referred to as NYTIE have been performed at Ny-Ålesund, involving the VGOS telescope NYALE13S and the legacy S/X antenna NYALES20. In both cases, these dedicated experiments yielded station coordinates and baselines with mm or even sub-mm accuracy.
This thesis focuses on exploring the possibilities of connecting co-located radio telescopes with short-baseline interferometric measurements, specially in the cases of the observatories in Onsala and Ny-Ålesund.
At the Onsala Space Observatory (OSO), this is being done by short-baseline interferometry between the VGOS Onsala Twin Telescopes ONSA13SW and ONSA13NE, and the legacy antenna ONSALA60. Similarly, short-baseline interferometry sessions referred to as NYTIE have been performed at Ny-Ålesund, involving the VGOS telescope NYALE13S and the legacy S/X antenna NYALES20. In both cases, these dedicated experiments yielded station coordinates and baselines with mm or even sub-mm accuracy.
This thesis focuses on exploring the possibilities of connecting co-located radio telescopes with short-baseline interferometric measurements, specially in the cases of the observatories in Onsala and Ny-Ålesund.
VLBI
Space Geodesy
VGOS
Local Ties
S/X
EB, Hörsalsvägen 11, Chalmers
Opponent: Pablo de Vicente, Director of the Observatory at Yebes, Spain
Author
Rebekka Handirk
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Obtaining Local-Tie Vectors from Short-Baseline Interferometry
IVS 2022 General Meeting Proceedings,;Vol. 1(2023)p. 134-138
Paper in proceeding
Rebekka Handirk, Eskil Varenius, Tobias Nilsson, Karine Le Bail, Rüdiger Haas, Rubén Bolaño González, Susana Garcia Espada, Axel Meldahl, Thomas Gasmoe, Silje Agnes Grøslie Wennesland. Obtaining Local-Tie Vectors from Short-Baseline Interferometry between legacy S/X and VGOS Telescopes at Ny-Ålesund. In preparation.
Subject Categories
Astronomy, Astrophysics and Cosmology
Other Earth and Related Environmental Sciences
Other Natural Sciences not elsewhere specified
Other Electrical Engineering, Electronic Engineering, Information Engineering
Infrastructure
Onsala Space Observatory
Doktorsavhandlingar vid Chalmers tekniska högskola. Ny serie
Publisher
Chalmers
EB, Hörsalsvägen 11, Chalmers
Opponent: Pablo de Vicente, Director of the Observatory at Yebes, Spain