摘要
本文讨论了星载ＧＰＳ接收机为单频情形的低轨卫星几何法定轨，包括载波相位相对定轨法和动态同定轨法，并利用Ｔｏｐｅｘ／Ｐｏｓｅｉｄｏｎ卫星星载ＧＰＳ实测数据中Ｌ１载波相位观测值进行验证．结果表明，载波相位相对定轨精度与地面基准站的观测质量有关，其三维轨道位置精度为分米级；载波相位动态网定轨精度介于各基准站载波相位相对定轨之间，它相当于在各基准站相对定轨之间加权均衡，而且提高了定轨的可靠性．
Methods of single frequency carrier phase-based relative orbit determination(OD) and kinematic network OD for low-earth satellite are developed. From theresults calculated using L1 data collected by GPS/DR onboard Topex/Poseidon,we can draw following conclusions: (a) the accuracy of single frequency carrierphase-based relative OD may attain the order of a few decimeters; (b) the accuracyof relative OD depends on the data quality of ground tracking stations; (c) theaccuracy of kinematic network OD is equavalent to a weighting among relative ODsof different ground tracking stations and can improve the reliability and precisionof OD due to its redundant condition and good geometric configuration.
出处
《空间科学学报》
CAS
CSCD
北大核心
2000年第1期32-39,共8页
Chinese Journal of Space Science
基金
国防科工委重大项目
中国科学院动力大地测量学开放研究实验室资助课题
关键词
相对定轨
动态网定轨
GPS
低轨卫星
几何法定轨
Relative orbit determination, Kinematic network orbit determination, Global Positiong System
