航天器工程2019，Vol.5Issue(5)：7-12,6.DOI:10.3969/j.issn.1673-8748.2019.05.002
应用GNSS定位数据的微小卫星自主导航方案设计
Autonomous Navigation Scheme Design Using GNSS Positioning Data for Micro-satellite
摘要
Abstract
To improve the capability of navigation,an autonomous navigation scheme using GNSS posi-tioning data for micro-satellite is designed,which can provide autonomous orbit determination and orbit prediction.GNSS positioning data is sent to the autonomous navigation module,which can operate navi-gation data using extend Kalman filter.At the same time,the GNSS positioning data is sent to ephemeris model generator,which can estimate the quasi-mean element orbital parameters based on the analytical orbit model.When the GNSS receiver fails,the estimated orbital parameters can be used as backups to ensure that the satellites can obtain orbit information.A mathematical simulation verification is confirmed by MATLAB ,the results show that the filtering accuracy is within 25 m and the prediction accuracy is better than 1 5km in 5 days for the orbit of which the altitude is 700km,and it proves this navigation scheme has good practicability.关键词
微小卫星/自主导航/扩展卡尔曼滤波/轨道预报Key words
micro-satellite/autonomous navigation/extend Kalman filter/orbit prediction分类
航空航天引用本文复制引用
刘燎,吴爱国,陶钊榕,孙华苗,谢成清..应用GNSS定位数据的微小卫星自主导航方案设计[J].航天器工程,2019,5(5):7-12,6.基金项目
国家自然科学基金(11802073) （11802073）
