e-VLBI Progress in China Zhang Xiuzhong, team of Chinese VLBI Network Shanghai Astronomical Observatory Chinese Academy of Sciences. Outline. Introduction e-VLBI Facility Development in China some e-VLBI Observation results Future Plan for e-VLBI in China. 1. Introduction.
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in Year 2001, started to discuss about lunar prospect project in China. There are problems to use current Chinese R & RR satellite tracking system to do lunar probe tracking.
With Chinese Lunar Project, we have a chance to upgrade our VLBI system:
two new telescopes ( 50m and 40m )
improve the station instruments
create a data processing center (include hardware and software correlator)
the network for e-VLBI
May 11, 2006
May 17, 2006
A New Correlator
several hundred KHz
with special structure
16Mbps in real time mode, 256Mbps in non real time mode.
The result delay time: 1.5 – 2 minutes after observe time for 1 min. data
residual delay rate
The residual delay and delay rate, compare with ESA reconstructed orbit.
black for the results with hardware correlator and red for software correlator
6462 0.0011/3.04051.9539/3.6147 SH－BJ
5502 -0.6249/0.94651.6972/1.8163 SH－KM
5329 -0.7947/-2.55481.6538/2.9382 SH－UR
5858 0.1180/-1.89501.4796/2.3543 BJ－KM
5669 -0.0973/-5.21851.5870/5.4488 BJ－UR
5813 -0.2839/-3.49171.0780/3.6433 KM－UR
Red: new results