我国中继卫星系统在交会对接任务中的应用

Application of China's TDRSS in Space Rendezvous and Docking Missions

我国中继卫星系统在交会对接任务中得到了成功应用,显著提升了测控通信覆盖率,充分体现了中继卫星系统在交会对接任务测控通信中发挥的重要作用。结合中继卫星系统特点,分析交会对接任务对中继卫星系统的任务需求;探讨了中继卫星捕获跟踪用户目标、对用户目标测定轨、着陆场直升机缝隙通信等关键技术;最后总结了中继卫星系统抗雨衰影响、多目标支持能力、应急支持能力等方面的经验做法,并提出了后续改进和完善的建议。

China＇s TDRSS （Tracking and Data Relay Satellite System） has been successfully applied in space rendez- vous and docking missions, and the system significantly improves TT＆C （Tracking, Telemetry and Command） and communication coverage. This demonstrates that TDRSS has played an important part in TT＆C and communication for space rendezvous and docking missions. Based on the features of TDRSS, requirements of the space rendezvous and docking missions are analyzed. Key technologies such as acquisition and tracking of user objects, user object or- bit determination, and gap communication for landing range helicopters are discussed. Finally, a summary is given on successful experience and practices of the TDRSS, e. g. , minimization of rain attenuation impact, multi-object support capability and emergency support capability, and recommendations are given on further improvement of theTDRSS system.