利用星载GPS双频观测值确定SWARM卫星精密轨道  

SWARM Precise Orbit Determination Using Dual-Frequency Space-Borne GPS Observations

作　　者：聂琳娟[1] 张兵兵 NIE Linjuan;ZHANG Bingbing(Hubei Water Resource Technical College,Wuhan 430070,China;School of Geographic Science,Xinyang Normal University,Xinyang 464000,China;School of Geodesy and Geomatics,Wuhan University,Wuhan 430070,China)

机构地区：[1]湖北水利水电职业技术学院,湖北武汉430070 [2]信阳师范学院地理科学学院,河南信阳464000 [3]武汉大学测绘学院,湖北武汉430070

出　　处：《测绘地理信息》2018年第4期17-19,23,共4页Journal of Geomatics

基　　金：国家自然科学基金资助项目(41474018,41774019,41274032)

摘　　要：在简化动力学定轨方法的基础上,联合SWARM星载GPS双频观测数据和简化的动力学模型,在确定性运动方程中引入经验加速度参数,对SWARM卫星进行精密定轨,并对定轨结果进行精度评定。内、外符合精度评估结果表明,SWARM卫星定轨精度可达到cm级。On the basis of reduced-dynamic orbit determination method,combining SWARM dual-frequency onboard GPS observations and reduced-dynamic models,the empirical acceleration parameters are introduced into the deterministic equation of motion to compute precise orbit determination of SWARM satellites,The accuracy of the orbit determination is evaluated.Internal and external conformity assessment results show that the orbit accuracy of SWARM Satellites has reached centimeter level.

关 键 词：简化动力学 经验加速度 精密定轨 cm级 

分 类 号：P228.4[天文地球—大地测量学与测量工程]