中继卫星星间天线指向误差传播率研究

基于中继卫星星间天线对用户航天器的跟踪规律,建立了准确的误差传递模型,并对分析结果进行了仿真验证。文中首先定义了误差传递模型所需的各类坐标系;然后使用微分方法分别建立了中继卫星轨道误差传递模型、中继卫星姿态误差传递模型,分析了滚动角、俯仰角和偏航角与指向精度之间的关系,以及位置保持控制对指向精度的影响;最后借助于STK软件的轨道计算功能,使用蒙特卡罗方法进行数学仿真,仿真结果验证了误差传递模型的准确性。

Study on the Inter-Satellite Antenna Pointing Error Spread Quotient of Tracking and Data Relay Satellites

Accurate error spread models are presented based on the regularity of tracking of user spacecraft by TDRS and the analysis result is validated using numerical simulations.First,coordinate systems required by the error spread models are defined.Second,TDRS attitude and orbit error spread models are presented using differential calculus.The relationship between pointing precision and roll,pitch and yaw is analyzed,and the influence of station-keeping on pointing precision is studied.Finally,numerical simulati...