Results 121 to 130 of about 15,217 (172)
, 2003 Latex, 6 pages, 8 figures; Invited Review Talk at the ``ADeLA2002 - Astrometry in Latin America'' Conference, Araraquara - Sao Paulo, 2 - 5 September 2002, to be published in ADeLA Publications Series, Vol.
openaire +2 more sources
A VLBI view on the extreme scintillator J1819+3845
, 2012 Scintillation of flat spectrum radio sources provides a unique instrument to study the characteristics of the electron density distribution throughout the interstellar medium as well as to study the microarcsecond structure of compact radio objects ...
Gurvits, L. (author) +4 more
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, 2013 The K5/VSSP software correlator (Figure 1), located in Tsukuba, Japan, is operated by the Geospatial Information Authority of Japan (GSI). It is fully dedicated to processing the geodetic VLBI sessions of the International VLBI Service for Geodesy and ...
Kurihara, Shinobu, Nozawa, Kentaro
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Estimation of Earth Rotation Parameters Based on BDS-3 and Discontinuous VLBI Observations
Remote SensingEarth rotation parameters (ERPs) are fundamental to geodetic and astronomical studies. With its high measurement accuracy and stability, the Very Long Baseline Interferometry (VLBI) plays an irreplaceable role in estimating the ERPs and maintaining the ...
Chenxiang Wang +3 more
doaj +1 more source
Opportunities with VLBI Transmitters on Satellites
Abstract Very Long Baseline Interferometry (VLBI) transmitters on satellites are considered for future satellites of Global Navigation Satellite Systems (GNSS) as well as for the upcoming Genesis mission of the European Space Agency (ESA).
Böhm, J., Wolf, H.
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The Astrophysical JournalWe present high-sensitivity very long baseline interferometry (VLBI) observations of four ultraluminous X-ray sources (ULXs): Holmberg II X-1, IC 342 X-1, NGC 6946 X-1, and NGC 925 X-1.
Ailing Wang +9 more
doaj +1 more source
The latest results from the global mm VLBI array [Elektronisk resurs]
, 2012 The Global mm-VLBI Array (GMVA) is the highest angular resolution imaging interferometer currently available as a common user facility. It is capable of angular resolutions on the order of 40 microarcseconds.
Bremer, M., +8 more
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A Simulator to Generate VLBI Baseband Data in Matlab
, 2019 VLBI radio telescopes represent a sophisticated interconnection of electronic devices. The final product of each observation by a radio telescope is the baseband data. In this presentation, we show a software tool as part of the Vienna VLBI and Satellite
Schartner, Matthias +3 more
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A strategic design of differential VLBI observation of spacecraft
, 2007 较差VLBI技术交替观测目标天体和参考天体，将共同的误差因素从观测量中扣除，能够实现高精度的相对定位，在深空探测中具有重要应用。然而，实现高精度较差VLBI测量的前提条件是，要求目标天体与参考天体的角距很近。实际应用中，尤其是在变轨前后或者捕获阶段，不一定能够随时找到满足要求的参考源。本文基于天测与测地VLBI实测资料，分析设计了较差VLBI用于深空探测的一种测量方案，利用分布在以目标天体为中心的大圆环带内多颗参考源的观测，内插出目标源方向的非几何延迟 ...
王静
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Proceedings of the First International Workshop on VLBI Observations of Near-field Targets, October 5-6, 2016 [PDF]
, 2017 Diese Veröffentlichung erscheint anlässlich des First International Workshop on VLBI Observations of Near-field Targets, der am 4 - 5. Oktober 2016 im Institut für Geodäsie und Geoinformation stattfand.
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