The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 36 Issue 1
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- Pages.69.1-69.1
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- 2011
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- 1226-2692(pISSN)
VLBI Astrometry with Source Frequency Phase Referencing in KVN
- Jung, Tae-Hyun (Korea Astronomy & Space Science Institute (KASI)) ;
- Rioja, Maria (International Center for Radio Astronomy Research (ICRAR)) ;
- Dodson, Richard (International Center for Radio Astronomy Research (ICRAR)) ;
- Sohn, Bong-Won (Korea Astronomy & Space Science Institute (KASI))
- Published : 2011.04.05
Abstract
The multi-band receiving feed which is one of the unique characteristics of the Korean VLBI Network (KVN) system compare to the other VLBI network enables to study precise astrometry with a source frequency phase referencing (SFPR) techniques. SFPR almost perfectly compensates the dominant non-dispersive tropospheric fluctuations by observing sources with multi-frequency simultaneously, and it also corrects the dispersive ionospheric fluctuations by adding a slow source-switching observation. In this talk, I will present the results from the KVN astrometric observations with SFPR and the achievable astrometric accuracy in KVN will be discussed.
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