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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。
Based on the tracking of user spacecraft by interplanetary satellite antenna, an accurate error transfer model is established, and the analysis results are verified by simulation. Firstly, the various types of coordinate systems required for the error transfer model are defined. Then the differential satellite orbit error transfer model and the relay satellite attitude error transfer model are established respectively. The rolling angle, pitch angle, yaw angle and Pointing accuracy and the effect of position keeping control on the pointing accuracy. Finally, the Monte Carlo method is used to perform mathematical simulation with the help of the orbit calculation function of STK software. The simulation results verify the accuracy of the error transfer model.