[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5303/PKAS.2015.30.2.651

VLBI MEASUREMENT OF WEAK SOURCES WITH IMPROVED SENSITIVITY

SHU, FENGCHUN (Shanghai Astronomical Observatory)
JIANG, WU (Shanghai Astronomical Observatory)

Publication Information

Publications of The Korean Astronomical Society / v.30, no.2, 2015 , pp. 651-653 More about this Journal

Abstract

Compared with traditional analog system, the Chinese VLBI Data Acquisition System (CDAS) is a digital one with better bandpass and wider bandwidth which allow weaker sources to be detected and measured by VLBI techniques. After optimizing and verifying the performance of CDAS in wide bandwidth observing mode, we performed an experiment by observing 85 weak sources along the ecliptic with Chinese VLBI stations located at Shanghai, Kunming and Urumqi. The capability of CDAS has been demonstrated for the detection of weak sources with improved sensitivity.

Keywords

astrometry; catalogues; techniques: interferometric;

Citations & Related Records

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