Chang'E-1 and Chang'E-2 of China's Lunar Exploration Program(CLEP) have successfully achieved their mission.At the present time,only Chang'E-3 is still in operation,which was successfully launched on D...Chang'E-1 and Chang'E-2 of China's Lunar Exploration Program(CLEP) have successfully achieved their mission.At the present time,only Chang'E-3 is still in operation,which was successfully launched on December 2,2013.Chang'E-3 probe is the third robotic lunar mission of CLEP,which consists of a lander and a rover,with eight payloads on board the spacecraft.Up to December 21,2015,more than 2.86 TB raw data were received from these instruments onboard Chang'E-3 probe.A series of research results have been achieved.This paper gives a detailed introduction to the new scientific results obtained from Chang'E-3 missions.展开更多
Chang’e-5 mission is China’s first lunar sample return mission.It contains several new flight phases compared with the previous lunar missions,such as the lunar take-off and orbit insertion phase,the rendezvous and ...Chang’e-5 mission is China’s first lunar sample return mission.It contains several new flight phases compared with the previous lunar missions,such as the lunar take-off and orbit insertion phase,the rendezvous and docking phase,etc.Chang’e-5 mission is extremely complicated and full of new challenges.This paper sorts out the characteristics and the difficulties in telemetry,tracking,and command(TT&C)of Chang’e-5 mission.The main technical contribution is a reliable general design of the TT&C system,including the application of X-band TT&C in launch and early orbit phase(LEOP),multiple targets simultaneous TT&C in X-band,lunar surface benchmark calibration,high-precision and rapid orbit trajectory determination for the lunar surface take-off,remote guidance rendezvous and docking,the determination of the initial navigational value for the separation point of the Chang’e-5 orbiter and returner,and the design of the reentry measurement chain.Based on this scheme,a global deep space TT&C network and interplanetary reentry measurement chain have been established for China,and near-continuous TT&C support for China’s first extraterrestrial object sampling and return mission has been realized,ensuring reliable tracking,accurate measurement and accurate control.The global deep space network can provide TT&C support comparable to that of National Aeronautics and Space Administration(NASA)and European Space Agency(ESA)for subsequent lunar and deep space exploration missions.The techniques of rapid trajectory determination of lunar take-off and orbit entry,as well as high precision and remote guidance of lunar orbit rendezvous and docking can lay a technological foundation for the future manned lunar exploration missions and planetary sampling and return missions.展开更多
基金Supported by the Key Research Program of the Chinese Academy of Sciences(KGZD-EW-603)
文摘Chang'E-1 and Chang'E-2 of China's Lunar Exploration Program(CLEP) have successfully achieved their mission.At the present time,only Chang'E-3 is still in operation,which was successfully launched on December 2,2013.Chang'E-3 probe is the third robotic lunar mission of CLEP,which consists of a lander and a rover,with eight payloads on board the spacecraft.Up to December 21,2015,more than 2.86 TB raw data were received from these instruments onboard Chang'E-3 probe.A series of research results have been achieved.This paper gives a detailed introduction to the new scientific results obtained from Chang'E-3 missions.
文摘Chang’e-5 mission is China’s first lunar sample return mission.It contains several new flight phases compared with the previous lunar missions,such as the lunar take-off and orbit insertion phase,the rendezvous and docking phase,etc.Chang’e-5 mission is extremely complicated and full of new challenges.This paper sorts out the characteristics and the difficulties in telemetry,tracking,and command(TT&C)of Chang’e-5 mission.The main technical contribution is a reliable general design of the TT&C system,including the application of X-band TT&C in launch and early orbit phase(LEOP),multiple targets simultaneous TT&C in X-band,lunar surface benchmark calibration,high-precision and rapid orbit trajectory determination for the lunar surface take-off,remote guidance rendezvous and docking,the determination of the initial navigational value for the separation point of the Chang’e-5 orbiter and returner,and the design of the reentry measurement chain.Based on this scheme,a global deep space TT&C network and interplanetary reentry measurement chain have been established for China,and near-continuous TT&C support for China’s first extraterrestrial object sampling and return mission has been realized,ensuring reliable tracking,accurate measurement and accurate control.The global deep space network can provide TT&C support comparable to that of National Aeronautics and Space Administration(NASA)and European Space Agency(ESA)for subsequent lunar and deep space exploration missions.The techniques of rapid trajectory determination of lunar take-off and orbit entry,as well as high precision and remote guidance of lunar orbit rendezvous and docking can lay a technological foundation for the future manned lunar exploration missions and planetary sampling and return missions.
