%0 Journal Article
%T DISCUSSION ON ORBIT FITTING AND ORBIT FORECASTING OF LOW EARTH ORBIT SATELLITES<br>低轨卫星轨道拟合及预报方法研究
%A Zhang Ruwei
%A Liu Genyou
%A <br>张如伟
%A 刘根友
%J 大地测量与地球动力学
%D 2008
%I 
%X The orbit fitting and forecasting of CHAMP satellite as an LEO example is discussed.The influence on fitting accuracy in the selection of different fitting time length and different polynomial order by use of Chebyshev polynomial is analyzed,and the feasibility of orbit forecasting in a short time is discussed as well.The fitting results with Chebyshev polynomial,Lagrange polynomial and normal polynomial are compared with each other,it indicates that Chebyshev polynomial is superior to both the others.In addition,the accuracy of forecasting orbit by using Chebyshev polynomial based on the m-level orbit of single point orbiting,and numerical stability of the method is verified.it is proved that the Chebyshev polynomial can be used for real-time forecasting LEO orbit in a short time.
%K Chebyshev polynomial
%K Lagrange polynomial
%K LEO
%K real-time orbiting
%K orbit fitting
%K orbit forecasting<br>切比雪夫多项式
%K 拉格朗日多项式
%K 低轨卫星
%K 实时定轨
%K 轨道拟合
%K 轨道预报
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=DA72A78627FE64EAA572951EA05D274A&jid=73A1A428591E600EF664B596512A2997&aid=E1C632BBD4E2DCD89451269E255379C5&yid=67289AFF6305E306&vid=D3E34374A0D77D7F&iid=E158A972A605785F&sid=EDA22B444205D04A&eid=2B5DE8A23DCEED39&journal_id=1671-5942&journal_name=大地测量与地球动力学&referenced_num=4&reference_num=8