%0 Journal Article
%T COMPARISON OF INTERPOLATING AND FITTING IGS PRECISE EPHEMERIS<br>IGS精密星历内插与拟合法精度的比较
%A Li Mingfeng
%A Jiang Guoyan
%A Zhang Kai
%A <br>李明峰
%A 江国焰
%A 张 凯
%J 大地测量与地球动力学
%D 2008
%I 
%X The principles of Lagrange interpolation,Neville interpolation,Chebyshev polynomial fitting and Legendre polynomial fitting were analysized compared with each other.The results indicate that the best orders of interpolating algorithm and fitting algorithm are 8 and 9 respecdively and each algorithm has the same accuracy when their orders are the same.Besides,the stage of epoch which fitting algorithm is suitable to is longer than that for interpolating algorithm in the same order.
%K precise ephemeris
%K Lagrange interpolation
%K Neville interpolation
%K Chebyshev polynomial fitting
%K Legendre polynomial fitting<br>精密星历
%K Lagrange插值
%K Neville插值
%K Chebyshev多项式拟合
%K Legendre多项式拟合
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=DA72A78627FE64EAA572951EA05D274A&jid=73A1A428591E600EF664B596512A2997&aid=52C768E9462F6945DC042D4663C0ADD4&yid=67289AFF6305E306&vid=D3E34374A0D77D7F&iid=0B39A22176CE99FB&sid=E44E40A2398D4F2A&eid=E203FB1A272C9DD2&journal_id=1671-5942&journal_name=大地测量与地球动力学&referenced_num=1&reference_num=10