Results 51 to 60 of about 160 (88)
Evaluating the feasibility of short-integration scans based on the 2022 VGOS-R&D program
, 2023 In this work, we report on activities focusing on improving the observation strategy of the Very Long Baseline Interferometry (VLBI) Global Observing System (VGOS).
Krasna, Hana +8 more
core
, 2016 Very Long Baseline Interferometry (VLBI) is an essential technique forspace-geodesy. It realizes the International Celestial Reference Frame(ICRF) and provides a link between the Earth- and space-fixed coordinatesystems by directly observing all Earth ...
Kareinen, Niko Petteri,
core
Impacto de una mejor distribución de estaciones en las sesiones de VLBI geodésico [PDF]
El Global Geodetic Observing System (GGOS) tiene por objetivo el monitoreo de los cambios globales del sistema terrestre. Dentro de éste, VLBI (Very Long Baseline Interferometry) juega un rol indiscutible, siendo la única técnica capaz no sólo de ...
Fernández, Laura Isabel +1 more
core
Effects of source structure in legacy and broadband geodetic VLBI
Very Long Baseline Interferometry (VLBI) is critical for the realisation of global geodetic reference frames. The new VLBI system (VLBI Geodetic Observing System; VGOS) is designed with the primary goal of filling the gap between the current accuracy of ...
Simin Salarpour (14748610)
core +1 more source
Scheduling for VGOS Twin-Telescopes
, 2016 The technique of Very Long Baseline Interferometry (VLBI) allows the estimation of all five Earth Orientation Parameters (EOP), the International Celestial Reference Frame (ICRF) and it is a primary contributor to the International Terrestrial Reference ...
Gnilsen, Paul
core
Aims. We computed a celestial reference frame (CRF) from Very Long Baseline Interferometry (VLBI) Global Observing System (VGOS) data after five years of regular observations carried out under the umbrella of the International VLBI Service for Geodesy ...
Charlot, P.; orcid: +3 more
core +1 more source
Combination of space-geodetic techniques in the era of VGOS and multi-GNSS [Elektronisk resurs]
, 2023 The definition and maintenance of accurate and stable Earth-fixed and inertial reference frames is crucial in studying, among else, geophysical and geodynamical phenomena, precise positioning, and space navigation.
Diamantidis, Periklis,
core
Cross-polarization Gain Calibration of VGOS Antennas
Antennas of the VLBI Global Observing System (VGOS) observe dual linear polarization. Calibration of the complex gain differences between the two polarizers of each antenna is neccesary in order to form Stokes I and to maximize the signal-to-noise ratio ...
Modiri, Sadegh +14 more
core
Ultra-wideband feed systems for the EVN and SKA - evaluated for VGOS [Elektronisk resurs]
, 2018 The design of the Square Kilometre Array (SKA) project for radio astronomy is now materializing at a rapid speed; the EU Horizon 2020 RadioNet project BRoad-bAND (BRAND) has the ambition to deliver a decade bandwidth receiver for EVN.
Flygare, Jonas, +7 more
core
Modernizing and Expanding the NASA Space Geodesy Network to Meet Future Geodetic Requirements. [PDF]
J Geod, 2019 Merkowitz SM +20 more
europepmc +1 more source