Post on 30-Dec-2015
上海天文台Shanghai Astronomical Observatory
Recent VLBI Activities in China
Zhi-Qiang Shen (Shanghai Astronomical Observatory)
2009 East Asia VLBI Workshop18-20 March 2009, LG Convention Hall of International Education
Building at the Ewha Woman's University, Seoul, Republic of Korea
上海天文台Shanghai Astronomical Observatory
2460
2158
3249 111
42476
1920
CVN (4 stations+ soft-/hard-ware correlator)
1993(25m)
1987(25m)
2006(50m)
2006(40m)
2006(correlator)
上海天文台Shanghai Astronomical Observatory
Diameter: 25m
Band: L, S/X, C, K
Recording system: MK2, S2, MK3, MK4, MK5A
CVN—Shanghai station (1987)
上海天文台Shanghai Astronomical ObservatoryCVN—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
上海天文台Shanghai Astronomical ObservatoryCVN—Kunming station
(2006)Diameter; 40m (central 25m:full panel; 25 - 40m: mesh)Band : S/XRecording system: MK5A
上海天文台Shanghai Astronomical Observatory
CVN—Beijing station (2006)
Diameter:50m (central 30m: full panel; 30-50 m: mesh)Band: S/XRecording system: MK5A
上海天文台Shanghai Astronomical ObservatoryMobile 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/XS/X
上海天文台Shanghai Astronomical ObservatoryCVN -VLBI data processing
centerHardware 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.)
上海天文台Shanghai Astronomical Observatory
CVN - Application to CE-1
16hX248hX124hX3
6d
12h
3.5h
2h
调相轨道段
地月转移轨道段月球捕获轨道段
环月轨道段
Orbit determination: USB+VLBIVLBI tracking distance > 20000km elevation > 5 degree output data: delay, delay rate, angular position output delay time: < 5 minutes
上海天文台Shanghai Astronomical Observatory
VLBI CorrlatorVLBI Corrlator
Post-data processingPost-data processing
Angular position calculationsAngular position calculations
O.D.O.D.
delay Delay rate
VLBI Center
Control center in BeijingControl center in Beijing<5 minutes later
VLBI center in ShanghaiVLBI center in Shanghai
Dec.R.A.
上海天文台Shanghai Astronomical Observatory
Chang’E National project
回 :returning回 :returning
绕 :Orbiting
CE-1:Oct 2007 (482d/494d)CE-2: ~2010
绕 :Orbiting
CE-1:Oct 2007 (482d/494d)CE-2: ~2010
落 :LandingCE-3:~2012落 :LandingCE-3:~2012
上海天文台Shanghai Astronomical Observatory
Ending of CE-1: March 1, 2009
上海天文台Shanghai Astronomical Observatory
e-VLBI28 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)
上海天文台Shanghai Astronomical ObservatoryFAST- Five-hundred-meter
Aperture Spherical TelescopeUnique 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
上海天文台Shanghai Astronomical Observatory
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)
上海天文台Shanghai Astronomical Observatory
CVN by 2014
Thanks!