Results 51 to 60 of about 349 (100)

Obtaining Local-Tie Vectors from Short-Baseline Interferometry [PDF]

, 2023
With the VLBI Global Observing System (VGOS) being the next step in the development of geodetic VLBI, it is necessary to connect the new VGOS network to the existing legacy S/X telescopes.
Haas, R\ufcdiger, Handirk, Rebekka, Nilsson, Tobias, Varenius, Eskil   +3 more
core  

Analysis of GPS, VLBI and DORIS input time series for ITRF2014 [PDF]

, 2015
In this work we have compared the Up component time series reprocessed in view of the new ITRF2014. The solutions that we have considered are the combinations of individual submissions of the Operational Analysis Centers (ACs) as o- cial IVS, IGS and
Roggero, M., Tanır Kayıkc¸ı, E., TORNATORE, VINCENZA   +2 more
core  

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).
Barrett, John, Hoak, Dan, Krasna, Hana, Mondal, Dhiman, Petrachenko, Bill, Schartner, Matthias, Soja, Benedikt, Titus, Mike, Xu, Minghui   +8 more
core  

RFI Mitigation and Testing Employed at GGAO for NASA's Space Geodesy Project (SGP) [PDF]

Radio Frequency Interference (RFI) Mitigation at Goddard Geophysical and Astronomical Observatory (GGAO) has been addressed in three different ways by NASA's Space Geodesy Project (SGP); masks, blockers, and filters.
Bulcha, Berhanu, Hilliard, Lawrence M., Rajagopalan, Ganesh, Stevenson, Thomas, Turner, Charles   +4 more
core   +2 more sources

Optimal distribution of VLBI transmitters in the Galileo space segment for frame ties. [PDF]

Earth Planets Space, 2023
Wolf H, Böhm J.
europepmc   +1 more source

Modernizing and Expanding the NASA Space Geodesy Network to Meet Future Geodetic Requirements [PDF]

NASA maintains and operates a global network of Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), and Global Navigation Satellite System ground stations as part of the NASA Space Geodesy Program.
Bolotin, S., Elosegui, P., Esper, Jaime, Gipson, John M., Hilliard, L., Himwich, E., Hoffman, E. D., Lakins, D. D., Lamb, R. C., Lemoine, F. G., Long, J. L., MacMillan, D. S., McGarry, J. F., Merkowitz, S. M., Michael, B. P., Noll, C., Pavlis, E. C., Pearlman, M. R., Ruszczyk, C., Stowers, D. A.   +19 more
core   +1 more source

Analysis of the performance of hydrogen maser clocks at the Hartebeesthoek Radio Astronomy Observatory [PDF]

, 2016
Hydrogen maser frequency standards are commonly utilised in various space geodetic techniques such as Very Long Baseline Interferometry (VLBI) as local reference clocks.
Botai, O.J., Combrinck, L, Munghemezulu, C, Quick, J   +3 more
core   +2 more sources

The Australian mixed-mode observing program. [PDF]

J Geod, 2022
McCallum L, Chin Chuan L, Krásná H, McCallum J, Böhm J, McCarthy T, Gruber J, Schartner M, Quick J, Rogers A.   +9 more
europepmc   +1 more source

Probing a southern hemisphere VLBI Intensive baseline configuration for UT1 determination. [PDF]

Earth Planets Space, 2022
Böhm S, Böhm J, Gruber J, Kern L, McCallum J, McCallum L, McCarthy T, Quick J, Schartner M.   +8 more
europepmc   +1 more source

PMD IVS Analysis Center 2019–2020 Report [PDF]

, 2021
The activities related to geodetic VLBI carried out at the IVS AC PMD during 2019 and 2020 were focused on different topics that are detailed below.
V. Tornatore
core