摘要
GPS精密星历以15min为间隔发布卫星精密轨道。在实际应用中,往往需要求解任意时刻卫星精密轨道。常用的方法有拉格朗日插值法和切比雪夫多项式拟合法。基于此,利用2007年7月8日的2号卫星精密星历数据,编程实现了不同阶数条件下的轨道拟合,并比较2种方法的精度,分析各自的优缺点。
GPS precise ephemeris with 15 min interval released satellite precise orbit. In practical applications, it is often required to solve the satellite precise orbit at any time. The commonly used method has Lagrange interpolation method and Chebyshev polynomial fitting. Based on this, by July 8, 2007 2 satellite ephemeris data, the track fitting of different order condition was realized by programming, and the accuracy of the two methods were compared, and theadvantagesand disadvantagesof each method wereanalyzed.
出处
《河南科技》
2016年第21期31-32,共2页
Henan Science and Technology
关键词
精密星历
拉格朗日插值法
切比雪夫多项式拟合法
卫星坐标
precise ephemeris
lagrang interpolating method
chybishev polynomial fitting
satellite coordinate
