摘要
在北斗三号卫星星间链路无法获取姿控系统闭环姿态角的情况下,为使其能继续计算指向保持建链,本文提出采用预报姿态进行建链计算的方案,并提出了一种全时段(包括地影期偏航正负阶跃时)的姿态预报算法。根据在轨真实姿态数据评估了长时预报姿态的精度和将其用于建链计算的指向精度。研究表明,本文提出的预报姿态方法在一年中99.998%的时间误差小于0.1°,一年内所有时间的误差在1.7°以内,将预报姿态应用于星间链路指向计算完全可行。本研究可为北斗导航系统精度与可靠性提升提供依据。
In the case of attitude transmission failure from the attitude control system to the inter-satellite-link(ISL)load in a MEO satellites of Beidou navigation satellite system(BDS-3),the ISL can not work,which can affect the positioning and clock error determination function.A method is proposed by using the orbit to calculate the realtime attitude for the ISL.As the existing attitude forecasting method does not work in period of the satellite being in the shadow of the earth,a new method is proposed for the forecasting in the earth shadow period.The results show that the error of the proposed method is less than 0.1°in 99.998%of the time in a year,and less than 1.7°in a whole year.It is practicable to apply the forecasting method to the ISL.This study can serve as an improvement of reliability for the BDS-3.
作者
邵瑞强
林夏
龚文斌
林宝军
赵帅
Shao Ruiqiang;Lin Xia;Gong Wenbin;Lin Baojun;Zhao Shuai(Navigation Satellite Research Institute,Shanghai Engineering Center for Microsatellites Shanghai 201210,China;Innovation Academy for Microsatellites of Chinese Academy of Sciences,Shanghai 201210,China;Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China;School of Computer Science and Technology,University of Chinese Academy of Sciences,Beijing 100094,China;School of Information Science and Technology,ShanghaiTech University,Shanghai 201210,China)
出处
《航天控制》
CSCD
北大核心
2022年第2期35-40,共6页
Aerospace Control
基金
上海市青年科技英才杨帆计划项目基金(21yf1446000)。
关键词
北斗MEO卫星
地影期
卫星姿态
预报姿态
Beidou MEO satellite
Period of shadow of the earth
Satellite attitude
Forecasting attitude
