IGS精密星历内插GPS卫星位置研究  

Research on IGS Precise Ephemeris Interpolating GPS Satellite Position

作　　者：任迎华 

机构地区：[1]无锡水文工程地质勘察院,江苏无锡214063

出　　处：《矿山测量》2010年第3期54-56,共3页Mine Surveying

摘　　要：阐述了用拉格朗日多项式内插计算GPS卫星轨道位置的方法,并利用IGS跟踪站给出的精密星历作为实例运用MATLAB进行编程计算,给出了拉格朗日内插法得到的卫星位置误差与多项式阶数的关系。结果表明,用拉格朗日多项式内插法得到的卫星位置精度能够满足精密定位的要求。The method of calculating satellite orbitposition is expatiated through Lagrange polynomial interpolation; the programming calculation through MATLAB is made which use the precise ephemeris as the actual example through IGS tracking station, and the relation between satellite position error got from Lagrange interpolation and polynomial order is given. The result shows that the accuracy of satellite position got from Lagrange polynomial interpolation can meet the requirement of precision position.

关 键 词：IGS精密星历 MATLAB 拉格朗日多项式 卫星轨道 

分 类 号：P228.4[天文地球—大地测量学与测量工程]