Results 141 to 150 of about 22,374 (269)

Inter-comparison study of time and frequency transfer between VLBI and other techniques (GPS, ETS8(TCE), TW(DPN) and DMTD)

, 2012
We carried out the intercomparison ex- periments between VLBI and other techniques to show the capability of VLBI time and frequency transfer by using the current geodetic VLBI tech- nique and facilities as the summary of the exper- iments that we ...
Hama, S, Ichikawa, R, Hobiger, T, Tsuchiya, S, Takiguchi, H, Fujieda, M, Nakamura, M, Kimura, M, Nakagawa, F, Koyama, Y, Tabuchi, R, Aida, M, Amagai, J, Li, T, Ishii, A, Takahashi, Y, Kondo, T, Gotoh, T   +17 more
core  

European 4 Gbps VLBI and e-VLBI [PDF]

Proceedings of The 8th International e-VLBI Workshop — PoS(EXPReS09), 2009
Guifré Molera Calvés, Jan Wagner, Jouko Ritakari, Ari Mujunen   +3 more
openaire   +1 more source

VSOP Space VLBI and Geodetic VLBI Investigations of Southern Hemisphere Radio Sources

The Astrophysical Journal Supplement Series, 2002
Abstract not available.
Tingay, Steven J., Reynolds, John E., Tzioumis, Anastasios K., Jauncey, David L., Lovell, James E., Dodson, R. G., Costa, M. E., McCulloch, Peter M., Edwards, Philip G., Hirabayashi, Hisashi, Murphy, David W., Preston, Robert A., Piner, B. Glenn, Nicolson, G. D., Quick, J. F. H., Kobayashi, Hideyuki, Shibata, Kazunari M.   +16 more
openaire   +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

e-VLBI Technology in VLBI Network "Quasar" [PDF]

Proceedings of The 8th International e-VLBI Workshop — PoS(EXPReS09), 2009
Alexandre Salnikov, Andrey Finkelstein, Alexander Ipatov, Michael Kaidanovsky, Ilia Bezrukov, Andrey Mikhailov, Igor Surkis, Elena Skurikhina   +7 more
openaire   +1 more source

Supernova VLBI

, 2008
We review VLBI observations of supernovae over the last quarter century and discuss the prospect of imaging future supernovae with space VLBI in the context of VSOP-2. From thousands of discovered supernovae, most of them at cosmological distances, ~50 have been detected at radio wavelengths, most of them in relatively nearby galaxies. All of the radio
openaire   +2 more sources

DBBC3 — The new wide-band backend for VLBI

, 2018
The DBBC3 VLBI digital backend is the successor of the most widely adapted digital VLBI backend DBBC2. The DBBC3 offers much wider bandwidth and integrated Ethernet output.
Wunderlich, M.,, Tuccari, Gino,, Johansson, Karl-Åke L,, Alef, Walter,, Wagner, Jan,, Roy, A.,, Haas, Rüdiger,, Rottmann, H.,, Dornbusch, S.,   +8 more
core  

Monitoring of multi-frequency polarization of gamma-ray bright AGNs

EPJ Web of Conferences, 2013
We started two observing programs with the Korean VLBI Network (KVN) monitoring changes in the flux density and polarization of relativistic jets in gamma-ray bright AGNs simultaneously at 22, 43, 86, 129 GHz.
Lee Sang-Sung, Han Myounghee, Kang Sincheol, Seen Jungmin, Byun Do-Young, Baek Jun-Hyun, Kim Soon-Wook, Kim Jeong-Sook   +7 more
doaj   +1 more source

On the Integration of VLBI Observations to GENESIS into Global VGOS Operations

Remote Sensing
The upcoming European Space Agency (ESA) satellite mission GENESIS is an Earth-orbiting satellite carrying instruments of all four space geodetic techniques.
David Schunck, Lucia McCallum, Guifré Molera Calvés   +2 more
doaj   +1 more source

Combining VLBI and GPS for inter-continental frequency transfer [Elektronisk resurs]

, 2015
For decades the Global Positioning System (GPS) has been the only space geodetic technique routinely used for inter-continental frequency transfer applications. In the past VLB) has also been considered for this purpose and the method's capabilities were
Haas, Rüdiger,, Koyama, Yasuhiro, Hobiger, Thomas,, Rieck, Carsten,   +3 more
core