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Recent VLBI Activities in China

Recent VLBI Activities in China. Zhi-Qiang Shen (Shanghai Astronomical Observatory). 2009 East Asia VLBI Workshop 18-20 March 2009, LG Convention Hall of International Education Building at the Ewha Woman's University , Seoul, Republic of Korea. CVN (4 stations+ soft-/hard-ware correlator).

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Recent VLBI Activities in China

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  1. Recent VLBI Activities in China Zhi-Qiang Shen (Shanghai Astronomical Observatory) 2009 East Asia VLBI Workshop 18-20 March 2009, LG Convention Hall of International Education Building at the Ewha Woman's University, Seoul, Republic of Korea

  2. CVN (4 stations+ soft-/hard-ware correlator) 1993(25m) 2006(50m) 2460 1987(25m) 3249 1114 2158 2476 1920 2006(40m) 2006(correlator)

  3. CVN—Shanghai station (1987) Diameter: 25m Band: L, S/X, C, K Recording system: MK2, S2, MK3, MK4, MK5A

  4. CVN—Urumqi station (1993) Diameter:25m Band: P, L, S/X, C, K，(also 30 and 49 cm) Recording system: MK2, MK3, MK4, MK5A, K-4，K-5

  5. CVN—Kunming station (2006) Diameter; 40m (central 25m:full panel; 25 - 40m: mesh) Band : S/X Recording system: MK5A

  6. CVN—Beijing station (2006) Diameter:50m (central 30m: full panel; 30-50 m: mesh) Band: S/X Recording system: MK5A

  7. Mobile VLBI—Yunnan (2000) A Mobile VLBI System with 3m antenna was constructed by ShAO for the Xi’an Surveying and Mapping Institute in 2000 which is located in the Yunnan Astronomical Observatory. S/X

  8. CVN -VLBI data processing center Hardware correlator (5 stations) Software correlator (4 stations) Output data: CE-1 format FITS format (available?) Software for CE-1 data processing (near real time, in 5 min.)

  9. CVN - Application to CE-1 Orbit determination: USB+VLBI VLBI tracking distance > 20000km elevation > 5 degree output data: delay, delay rate, angular position output delay time: < 5 minutes 12h 3.5h 2h 环月轨道段 调相轨道段 48hX1 24hX3 16hX2 月球捕获轨道段 地月转移轨道段 6d

  10. VLBI Corrlator Post-data processing delay Delay rate <5 minutes later Control center in Beijing Angular position calculations R.A. Dec. O.D. VLBI center in Shanghai VLBI Center

  11. Chang’E National project 绕:Orbiting CE-1:Oct 2007 (482d/494d) CE-2: ~2010 落:Landing CE-3:~2012 回:returning

  12. Ending of CE-1: March 1, 2009

  13. e-VLBI 28 August 2007: Shanghai –Australia & Europe (256Mbps) 17 June 2008: Shanghai –Australia & Japan (512Mbps) 6 January 2009: Shanghai-Urumqi (256Mbps) 15-16 January 2009: IYA marathon obs. (Asia, Australia, Europe, America)

  14. FAST- Five-hundred-meter Aperture Spherical Telescope Unique Karst depression as the site Active main reflector Cable - parallel robot feed support Approved in Nov 2005; Start full construction in 2009; 9 bands from 70MHz to 3 GHz (Expected) 2014

  15. New 65m telescope in Shanghai Specs: 8 bands (1.4–43 GHz); active surface; operational at S/X bands before the end of 2012 … (refer to the talk by Bin Li for details)

  16. CVN by 2014 Thanks!

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