服务轨道维持“鹊桥”计算精度的评估  

Orbit Determination and Accuracy Evaluation of Queqiao Relay Satellite for Orbit Maintenance

作　　者：孔静[1] 谢剑锋[1] 胡国林[1] 刘俊琦 马传令[1] 吴舒然 李柯 KONG Jing;XIE Jianfeng;HU Guolin;LIU Junqi;MA Chuanling;WU Shuran;LI Ke(Beijing Aerospace Control Center,Beijing 100094,China)

机构地区：[1]北京航天飞行控制中心,北京100094

出　　处：《深空探测学报（中英文）》2023年第6期652-658,共7页Journal Of Deep Space Exploration

基　　金：国家自然科学基金(52005136)。

摘　　要：位于地月L2点Halo轨道的“嫦娥四号”中继星,每3~4天需要通过动量轮卸载和轨道维持两种方式进行构型保持。针对“嫦娥四号”中继星机动频繁、控制精度高的特点,根据平动点轨道特性,在旋转坐标系分析了定轨误差分量对轨道控制参数计算的影响,得出影响轨道维持效果的定轨误差主要为旋转坐标系X-Y平面的速度误差。在此基础上提出一种服务轨道维持控制定轨精度评估的统计学方法,设计了平动点飞行期间轨道的计算策略,对中继星使命轨道的定轨精度开展评估,结果表明,目前测量条件下可为轨道维持提供的定轨精度为1~3mm/s。The Queqiao relay satellite which is located in the Halo orbit at Earth-Moon L2 libration point,needs to maintain its configuration by wheel off loading and orbit maintenance every 3-4 days.According to the orbit characteristics of the libration point,the influence of the component of the orbit determination error for the orbit control parameters is analyzed in the rotating coordinate system,and it is concluded that the orbit determination error affecting the orbit maintenance effect mainly concentrate on the velocity error of X-Y plane.In this paper,an orbit determination accuracy evaluation method for orbit maintenance control is proposed,the strategy of orbit determination is designed,and the influence of different strategies on orbit determination is evaluated.The orbit accuracy of the relay satellite in mission orbit is evaluated,and the results show that it can provide 1-3 mm/s velocity accuracy for orbit maintenance under the existing TT&C conditions.

关 键 词：“鹊桥” 轨道维持 旋转坐标系 轨道确定 精度评估 

分 类 号：V412.41[航空宇航科学与技术—航空宇航推进理论与工程]