BITTT and CCSDS in China
October 2010
About BITTT
BITTT is the abbreviation for Beijing Institute of Tracking and
Telecommunications Technology.
About BITTT
Position
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BITTT is the only direct subordinate institute of China Launch and
Tracking Control General (CLTC).
BITTT is not only a core department in CLTC, but also the only
dedicated institute for TTC general design and application in China.
About BITTT
Major work
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BITTT is engaged in TTC network design, mission analysis, research
and application of new TTC technology .
About BITTT
Achievement
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performed general technical scheme and interface design to provide
TTC service for all space missions in China, such as Shenzhou
manned space mission, ChangE lunar explorer mission.
accomplished planning and design of TTC network ,including launch
center, mission operation center, S-band TTC network, and so on.
CCSDS in China
Current Status
S-band TTC network
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has been compatible with CCSDS in RF and modulation
convolutional coding and R-S coding has been provided as options for
downlink.
CCSDS in China
Current Status
Satellite data communications system
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Convolutional coding , and R-S coding has been provided as options
for return link.
TC space link protocol and TC synchronization and channel coding has
been provided as options for forward link
AOS space link protocol has been provided as option for both forward
link and return link
CCSDS in China
Current Status
ChangE-1 and ChangE-2 mission
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convolutional coding has been implemented in TTC downlink .
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R-S coding has been implemented in data transfer downlink.
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CCSDS space packet protocol and AOS space link protocol has been
implemented in data transfer downlink.
BACC and ESOC has realized cross support by SLE CLTU and SLE RAF.
Resource mission
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AOS space link protocol has been implemented in data transfer
downlink.
CCSDS in China
In Future
As to deep space stations, which is being constructed:
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will be compatible with CCSDS in RF and modulation.
convolutional coding and R-S coding will be provided as options for
downlink.
AOS space link protocol will be provided as option for downlink.
SLE may be provided as optional interface to mission operation centre
or payload operation centre.
CCSDS in China
In Future
As to ChanE-3 mission, in addition to what has been implemented in
ChangE-1 and ChangE-2,
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concatenated coding will be implemented in data transfer downlink.
DOR measurement will be made, and once applicable, CCSDS
Recommendation for Delta-DOR will be adopted .
CCSDS in China
In Future
Manned space mission
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concatenated coding or individual convolutional coding will be
implemented in forward and return links.
AOS space link protocol will be implemented.
CCSDS in China
In Future
As to research area
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Research on space network which is suitable for future space missions
of China is being made.
CCSDS recommendations are important candidate protocols.
A testbed is being constructed to evaluate the performance of
candidate protocols.
THE END