摘要
利用PANDA软件确定GOCE卫星2009年年积日306—332天的简化动力学和几何学轨道,将简化动力学轨道与GOCE精密科学轨道(PSO)以及与基于PANDA解算的几何学轨道比较,简化动力学轨道重复弧段比较,以及利用SLR观测值检核等4种方式对轨道精度进行评估。结果表明,采用该精密定轨策略所确定的GOCE卫星轨道精度与PSO一致,其径向、切向、法向精度均优于2 cm。
The precise reduced dynamic and kinematic orbits for GOCE satellite have been determined with Position And Navigation Data Analyst （PANDA） software for period of DOY 306 to 332 of 2009. The orbit accuracy is assessed with the following four methods： the differences between the reduced-dynamic orbits and the Precise Science Orbit （PSO） computed by Astronomical Institute, University of Berne （AIUB）, the differences between the reduced-dynamic orbits and the kinematic orbits, the 6 hours overlap orbit differences between the reduced-dynamic orbits and the external orbit validation with SLR measurements. The results indicate that the accuracy of the re- duced-dynamic orbit is about 1 -2 cm in three directions respectively.
出处
《大地测量与地球动力学》
CSCD
北大核心
2013年第2期77-81,共5页
Journal of Geodesy and Geodynamics
基金
教育部高等学校学科创新引智计划(B07037)
关键词
GOCE卫星
PANDA软件
精密定轨
精度评估
精密科学轨道
Gravity field and steady-state Ocean Circulation Explorer （GOCE）
Position And Navigation Data Analyst （PANDA）
Precise Orbit Determination （POD）
accuracy assessment
Precise Science Orbit （PSO）
