Description: Chinese VLBI (Very Long Baseline Interferometry) network consists of two fixed stations, Sheshan, Shanghai and Nanshan, Urumchi, with a 25-meter antenna each station, and one mobile station with 6-meter antenna,located FengHuang shan, kunming. Shanghai Observatory’s 6 hydrogen masers have been used in the VLBI network, with two H-masers each station.
Also, for VLBI work, one of Shanghai Observatory’s H-maser went to Australia to join ATNF VLBI Observations in 1993.
see http://en.wikipedia.org/wiki/Very_Long_Baseline_Interferometry |