两颗中继卫星共用测站协同控制研究

中继卫星地面应用系统建设周期长、建设造价昂贵。处于相近轨位的两颗中继卫星使用同一个测站进行测控和数据中继应用，能够有效降低系统建设成本。通过梳理卫星各平台测控事件之间的时间约束关系及其对地面应用系统的设备的使用约束，分析了测定轨精度、位置保持、星蚀期能源管理、地敏探头干扰保护对共用测站的影响，提出了两颗中继卫星分时测定轨、位置保持分别进行地敏探头干扰保护的方法，以及平台应急条件下共用测站控制支持模式。最后，就共用测站执行数据中继任务提出了建简易备份站降速使用的建议，为中继卫星地面应用系统建设提供有益的参考。

Study on joint control of two TDRSs sharing one ground terminal station

It is expensive to construct Tracking and Data Relay Satellite(TDRS) ground terminal stations in both time and money. Two TDRSs in near orbit location sharing one ground terminal station can reduce the construction cost efficiently. Through combing the time relationship and the using constrains of ground telecommand equipment among every operation event,the precision of orbit determination,station-keeping,energy management in eclipse phase,shadow management,earth sensor protection are arranged individually in time,and flat emergency support is discussed.Finally,suggestion of building simple degraded station is given in undergoing data relay missions,which can be a reference in the construction of TDRS ground terminal stations.