均方根信息滤波和平滑及其在低轨卫星星载GPS精密定轨中的应用

基金项目: 国家自然科学基金资助项目(40174005);国家教育部科学技术研究重点基金资助项目;地球空间环境与大地测量教育部重点实验室开放研究基金资助项目(905276031-04-01)

详细信息

Applications of Square-Root Information Filtering and Smoothing on Orbit Determination of LEO Satellites with On-Board GPS Data

¹ Research Center of GPS,Wuhan University,129 Luoyu Road,Wuhan 430079,China ;² GFZ Potsdam,Telegrafenberg A17,Potsdam 14473,Germany

Funds: 国家自然科学基金资助项目(40174005);国家教育部科学技术研究重点基金资助项目;地球空间环境与大地测量教育部重点实验室开放研究基金资助项目(905276031-04-01)

摘要: 从均方根信息滤波和平滑的基本原理出发,结合卫星定轨的实际特征,导出了其在精密定轨软件中实现的详细公式;针对均方根滤波的特点,提出了快速高效地探测和修复GPS观测数据中周跳的新方法。利用实测星载GPS数据验证了基于均方根滤波的质量控制算法的可靠性,得到了有益的结果。
- 均方根信息滤波 /
- 质量控制 /
- 精密定轨
Abstract: The realization of square-root information filtering and smoothing in orbit determination software is discussed,a new real-time quality control method based on SRIF/SRIS is presented.The on-board GPS data of CHAMP satellite is processed by SRIF/SRIS module of PANDA software.The results show that even small slips can be surely detected and the reduced dynamic orbit of CHAMP can reach 5-8 cm,when 24 IGS station were solved simultaneity.
- square-root information filter /
- quality control /
- precision orbit determination