Results 71 to 80 of about 160 (88)

Simulation studies of new observing concepts for geodetic Very Long Baseline Interferometry

, 2017
Very Long Baseline Interferometry (VLBI) is a space-geodetic technique in which observations are carried out simultaneously by radio telescopes separated by hundreds or thousands of kilometers.
Klopotek, Grzegorz
core  

Legacy fostering the twins. Connecting the S/X and VGOS telescope network generations [Elektronisk resurs]

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
Handirk, Rebekka,
core  

Effect of station selection on VLBI-to-GNSS orientation transfer using space-ties onboard a next generation Galileo satellite

Sert H, Hugentobler U, Karatekin Ö, Dehant V.   +3 more
europepmc   +1 more source

Deriving Ionospheric Total Electron Content by VLBI Global Observing System Data Analysis During the CONT17 Campaign [PDF]

Radio Science, 2022
Abstract This article focuses on the new generation of geodetic very long baseline interferometry (VLBI), the VLBI global observing system (VGOS), and measurements carried out during the CONT17 campaign. It uses broadband technology that increases both the number and precision of observations.
S Motlaghzadeh, Robert Heinkelmann, Harald Schuh   +2 more
exaly   +4 more sources

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5 Year Technology Roadmap for VLBI Global Observing System (VGOS)

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
A Technology Development, Infusion, and an interleaved joint cal/val opportunity plan is described for the VLBI GLOBAL OBSERVING SYSTEM (VGOS), and Earth Science satellite missions that measure water vapor such as Global Precipitation Measurement (GPM) Core Observatory that covers the Earth from 65°S to 65°N.
Lawrence M. Hilliard, Leonid Petrov, Frank LeMoine, Ganesh Rajagopalan, Pedro Elosegui, Chester Ruszczyk, John Gipson, David Horsley 0002, Gary Brown   +8 more
openaire   +3 more sources

Bridging astronomical, astrometric and geodetic scheduling for VGOS

Journal of Geodesy, 2023
Funding Information: This research has made use of VGOS schedule files provided by the International VLBI Service for Geodesy and Astrometry (IVS) data archives.
Matthias Schartner, Arnaud Collioud, P Charlot   +2 more
exaly   +2 more sources

A broadband VLBI system using transportable stations for geodesy and metrology: an alternative approach to the VGOS concept [PDF]

Journal of Geodesy, 2021
International audienceWe have developed a broadband VLBI (very long baseline interferometry) system inspired by the concept of the VLBI Global Observing System (VGOS).
M Sekido, Hideki Ujihara, Tetsuro Kondo   +2 more
exaly   +2 more sources

Evaluations of the geodetic parameters derived from VLBI Global Observing System (VGOS)

2023
In the past few years, the VLBI Global Observing System (VGOS) has been established with the objective of improving the data from VLBI in order to meet the increasingly demanding requirements regarding the rotation of the Earth and the reference frame determination.
Hellmers, H., Modiri, S., Thaller, D., Bloßfeld, M.   +3 more
openaire   +2 more sources

Evaluation of VGOS and legacy S/X VLBI observations with non-tidal loading corrections

Advances in Space Research
Non-tidal surface loading (NTSL) is not traditionally corrected in geodetic measurements due to its relatively low modelling accuracy; however, it can displace geodetic sites by up to several centimeters, significantly affecting the precision of geodetic
Shivangi Singh, Johannes Bohm, Hana Krasna   +2 more
exaly   +2 more sources

Comparison of EOP and scale parameters estimated from the three simultaneous CONT17 VLBI observing networks

Journal of Geodesy, 2022
D S Macmillan
exaly