利用TLE数据判别天宫一号目标飞行器姿态  

Attitude Estimation of Tiangong-1 based on Two-Line-Elements

作　　者：张炜 崔文 田鑫 雷园[1] 刘兴 ZHANG Wei;CUI Wen;TIAN Xin;LEI Yuan;LIU Xing(Xi’an Satellite Control Center,Xi’an 710043,China)

机构地区：[1]西安卫星测控中心,西安710043

出　　处：《载人航天》2018年第6期827-831,共5页Manned Spaceflight

摘　　要：针对传统姿态判别方法对观测条件要求高、航天器翻滚速度缓慢情况下判别难度大的不足,从姿态变化引起迎风面积变化这一特点出发,提出了一种基于弹道系数的天宫一号姿态判别方法。使用双行根数作为数据源,对双行根数进行预处理,检测轨道机动事件并剔除误差较大根数;改进基于双行根数序列的弹道系数计算方法,并基于弹道系数结果判别出天宫一号姿态稳定、逐渐变化及翻滚三个阶段。Most of the uncontrolled re-entry objects have the varying attitude,and thus inducing the varying cross-sectional area.For the reason that it is difficult to estimate the attitude when the length of observation arc is shorter than the tumbling period,a new method was proposed for attitude estimation of Tiangong-1 based on the ballistic coefficient.Two-Line-Element(TLE)was used as the data source.First,the TLE sets were preprocessed,the orbital maneuver events were detected,and the poor-quality or incorrect TLEs were filtered out.Then,the ballistic coefficient was calculated based on multiple TLEs.Finally,three attitude phases of Tiangong-1 were estimated:the stable phase,the stable to unstable phase and the tumbling phase.

关 键 词：天宫一号 姿态判别 弹道系数 双行根数 

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]