Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Hana Krásná"'
Publikováno v:
South African Journal of Geomatics; Vol. 12 No. 1 (2023); 98-111
In the Very Long Baseline Interferometry (VLBI) space geodetic technique, various station-specific error sources corrupt the observable VLBI delay. An antenna axis offset (AO) model is applied in the VLBI data analysis for antennas with non-intersect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c7054c1757f2cb9ce8cad61383fc8e7
https://www.ajol.info/index.php/sajg/article/view/242246
https://www.ajol.info/index.php/sajg/article/view/242246
Autor:
Lucia McCallum, Lim Chin Chuan, Hana Krásná, Jamie McCallum, Johannes Böhm, Tiege McCarthy, Jakob Gruber, Matthias Schartner, Jonathan Quick, Axl Rogers
Publikováno v:
Journal of Geodesy, 96 (10)
Global geodetic VLBI is upgrading to its next-generation observing system, VGOS. This upgrade has turned out to be a process over multiple years, until VGOS reaches its full capabilities with the envisaged continuous observations. Until then, for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f387296ba0ff21d55cacce061c4bd57
https://hdl.handle.net/20.500.11850/574823
https://hdl.handle.net/20.500.11850/574823
Publikováno v:
Journal of Geodesy
The primary goal of the geodetic Very Long Baseline Interferometry (VLBI) technique is to provide highly accurate terrestrial and celestial reference frames as well as Earth orientation parameters. In compliance with the concept of VLBI, additional p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a294723fe39ed66139992d7dea48c664
https://doi.org/10.1007/s00190-021-01579-5
https://doi.org/10.1007/s00190-021-01579-5
Autor:
Leonid Petrov, Hana Krásná
Publikováno v:
Journal of Geodesy
We investigated the suitability of the astronomical 15 GHz VLBA observing program MOJAVE-5 for estimation of geodetic parameters, such as station coordinates and Earth orientation parameters. We processed contemporary geodetic dual-band RV and CN exp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f781db82dd2937e9336c66653c30c90a
https://doi.org/10.1007/s00190-021-01551-3
https://doi.org/10.1007/s00190-021-01551-3
Publikováno v:
Advances in Space Research. 63:51-62
Within the analysis of space geodetic observations, errors of the applied subdaily Earth rotation model can induce systematic effects in different estimated parameters. In this paper, we focus on the impact of the subdaily Universal Time (UT1) model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3ed4d6aa829644758fdf30984a5bf7e
https://doi.org/10.1016/j.asr.2018.08.007
https://doi.org/10.1016/j.asr.2018.08.007
The next realization of the International Terrestrial Reference System, the ITRF2020, is planned to be released in 2021. Our joint VLBI Analysis Center VIE which runs between TU Wien and BEV is one of eleven IVS (International VLBI Service for Geodes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b5e9ac7030e68470af1f68a3bbe7227
https://doi.org/10.5194/egusphere-egu21-1088
https://doi.org/10.5194/egusphere-egu21-1088
Publikováno v:
Journal of Geodesy and Geoinformation. :41-48
Farkli jeodezik VLBI analiz yazilim paketlerinin karsilastirilmasi, bu paketlerin duzgun calistiklarindan emin olunabilmesi icin son derece onemlidir. Viyana VLBI Yazilimi VieVS ve Solve, Jeodezik VLBI toplulugu tarafindan kullanilan iki farkli veri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa3b7b1383cde11eb19a115cb01d7c19
https://doi.org/10.9733/jgg.201215.1t
https://doi.org/10.9733/jgg.201215.1t
Publikováno v:
Journal of Geodesy and Geoinformation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83f4bacb7cf80d7ccda23c01f9b14ab4
https://doi.org/10.9733/jgg.201215.1
https://doi.org/10.9733/jgg.201215.1
Autor:
Oleg Titov, Hana Krásná
Publikováno v:
International Symposium on Advancing Geodesy in a Changing World ISBN: 9783030129149
Geodetic Very Long Baseline Interferometry (VLBI) measures the group delay in the barycentric reference frame. As the Earth is orbiting around the Solar system barycentre with the velocity V of 30 km/s, VLBI proves to be a handy tool to detect the su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d27611353f2463b1c885aa77fb4dea2c
https://doi.org/10.1007/1345_2018_48
https://doi.org/10.1007/1345_2018_48
Autor:
Jamie McCallum, Lucia Plank, Elizaveta Rastorgueva-Foi, B. Petrachenko, Hana Krásná, Stanislav S. Shabala, James E. J. Lovell
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 455:343-356
Thespatialstructureofsourcesmakingupthecelestialreferenceframe(CRF)atradiofrequencies is a systematic error source in very long baseline interferometry (VLBI) measurements. Using simulations, we investigate the effects of source structure on the CRF,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a369e2709fdd7ac5b9680a97e40f7166
https://doi.org/10.1093/mnras/stv2080
https://doi.org/10.1093/mnras/stv2080