Observation of weak astronomical radio source by very-long-baseline interferometry (VLBI) enhanced by using relatively strong astronomical radio source within small angular distance from weak source. Strong source and weak source observed alternately during measurement session. Direct detection of strong source provides reference delays and rates of change of delays used to integrate radio visibilities of weak source. Integrated visibilities added coherently over entire measurement session, using observed phases of strong source as references.
Stronger Source As Reference For Weaker Source In VLBI
NASA Tech Briefs ; 16 , 7
1992-07-01
Miscellaneous
No indication
English
Air Transport - Airbus projects weaker downturn, and a stronger market in India
Online Contents | 2006
Global Reference Frame, Intercomparisons of Results (SLR, VLBI, GPS)
British Library Conference Proceedings | 1994
|Elsevier | 1983
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