摘要
为确定滑动Neville插值计算GPS精密星历坐标时的最优阶次,本文分别对事后精密星历(IGS)、快速精密星历(IGR)和预报精密星历(IGU)做内插数据处理,确定了每种星历文件的最优插值阶次,比较分析了插值精度。另外通过研究发现,相对于X和Y坐标方向,Z坐标方向在插值阶次增加时能较快地满足插值精度要求。
In order to confirm the optimal order of the sliding Neville algorithm,we compare the interpolation accuracy of three kinds of precise ephemerides using the precise ephemeris（IGS）,rapid precise ephemeris（IGR）and forecasting ephemeris（IGU）,use them to do interpolation data processing,and optimal interpolation order of each ephemeris files is identified.Meanwhile we analyze the interpolation accuracy respectively.We found that compared with the Xand Y coordinates,Zcoordinate interpolation accuracy can meet the precision requirement more faster when the interpolation order increase.
作者
常远
林伟华
徐战亚
刘福江
张宏强
刘超群
CHANG Yuan LIN Weihua XU Zhanya LIU Fujiang ZHANG Hongqiang LIU Chaoqun(Jilin Provincial Communication Planning and Design Institute, Changchun 130021, China College of Information Engineering, China University of Geosciences（Wuhan）, Wuhan 430074, China Geomatics Center of Inner Mongolia Autonomous Region, Inner Mongolia 010000, China)
出处
《测绘地理信息》
2017年第1期53-56,60,共5页
Journal of Geomatics
基金
国家863计划资助项目(2014AA123001)
中央高校基本科研业务费资助项目(CUGL100242)
关键词
Neville插值
滑动算法
精密星历
最优阶次
插值精度
Neville interpolation
sliding method
precise ephemeris
optimal order
interpolation accuracy
