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Very-long-baseline interferometry (VLBI) is a type of astronomical interferometry used in radio astronomy. In VLBI a signal from an astronomical radio source, such as a quasar, is collected at multiple radio telescopes on Earth or in space. The distance between the radio telescopes is then calculated using the time difference between the ...
It was formed in 1962 from the merger of the Xujiahui (also romanized as "Ziikawei") and Sheshan (Zose) observatories in Shanghai. It was involved with the Chang'e 1 Moon mission as the VLBI array is used for position determinations. In October 2012 the Tian Ma 65-meter (213 ft) radio telescope was completed for SHAO. [1]
The Chinese Deep Space Network (CDSN) is a network of large antennas and communication facilities that are used for radio astronomy, radar observations, and spacecraft missions of China. The CDSN is managed by the China Satellite Launch and Tracking Control Center General (CLTC) of the People's Liberation Army Strategic Support Force Space ...
32 m VLBI dish Medicina Radio Observatory, Medicina, Bologna, Italy [38] 1.4–43 GHz 32 m, fully steerable dish, 1400 MHz...43 GHz 32 m VLBI dish Noto Radio Observatory, Noto, Italy, [38] 0.3–86 GHz 32 m, fully steerable dish, 300 MHz – 86 GHz. Operates both as part of astronomical and geodetic VLBI network and as a single dish.
Ye Shuhua (Chinese: 叶叔华; born June 21, 1927) is a Chinese astronomer and professor at Shanghai Astronomical Observatory, known for achieving one of the world's most precise measurements of Universal Time in the 1960s, and for establishing the very-long-baseline interferometry (VLBI) and satellite laser ranging (SLR) techniques in China.
The pre-eminent VLBI arrays operating today are the Very Long Baseline Array (with telescopes located across North America) and the European VLBI Network (telescopes in Europe, China, South Africa and Puerto Rico). Each array usually operates separately, but occasional projects are observed together producing increased sensitivity.
Queqiao-2 relay satellite (Chinese: 鹊桥二号中继卫星; pinyin: Quèqiáo èr hào zhōngjì wèixīng; lit. 'Magpie Bridge 2 relay satellite'), is the second of the communications relay and radio astronomy satellites designed to support the fourth phase the Chinese Lunar Exploration Program, [5] [6] [7] after Queqiao-1 launched in 2018.
The Very Long Baseline Array (VLBA) is a system of ten radio telescopes which are operated remotely from their Array Operations Center located in Socorro, New Mexico, as a part of the National Radio Astronomy Observatory (NRAO). [1]