摘要
TT&C System This system is primarily based on China's exi sting threeband space TT&C netwo rk,and supplemented by the very long ba seline interferometry(VLBI) astronomical measurement system. The TT&C and communications system belonging to the Phase I of China Lunar Exploration Program (CLEP)is based on the existing USB space monitoring and control network. After a technological transformation,
TT＆C System
This system is primarily based on China＇s existing threeband space TT＆C network, and supplemented by the very long baseline interferometry （VLBI） astronomical measurement system. The TT＆C and communications system belonging to the Phase I of China Lunar Exploration Program （CLEP） is based on the existing USB space monitoring and control network.
