摘要
在GPS定位中需要计算所需时刻卫星坐标,针对现有的插值法和拟合法的局限性,给出一种分段光滑的数值逼近方法——广义延拓插值。讨论广义延拓插值精度与三参数选取的关系,并与切比雪夫多项式插值结果进行比较分析。
Conducting GPS positioning,it is necessary to calculate the satellite coordinates at any time.Considering the limitations of the existing interpolation and fitting method,this paper aims at giving a kind of piecewise smooth numerical-approaching method-generalized extended interpolation.This paper discusses the relationship between generalized extended interpolation precision and the choice of three parameters and uses the Chebyshev polynomial to compare and analyze the interpolation results.
出处
《测绘工程》
CSCD
2010年第3期1-3,共3页
Engineering of Surveying and Mapping
基金
现代工程测量国家测绘局重点实验室开放基金资助项目(ES-SBSM-(06)-01)
关键词
广义延拓插值
切比雪夫多项式
精密星历
generalized extended interpolation
Chebyshev polynomial
precise ephemeris
