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中文摘要：
利用GRACE卫星高采样率精密轨道,进行了拉格朗日插值、牛顿插值和线性插值方法的研究,并对插值结果进行了比较和分析,探讨了插值方法的插值精度及其应用于低轨卫星轨道内插的适用性。
英文摘要：
Two polynomial interpolation methods—Lagrange interpolation and Newton interpolation,as well as Linear interpolation for high-sampling rate and precise orbit which is provided by The Ohio State University are discussed.Besides,the interpolation results are compared and analyzed.The precision and applicability of orbit interpolation for LEO satellite is discussed.The results indicate that Lagrange interpolation and Newton interpolation can produce the same precision level at 1 cm or better in position.Three methods are all appropriate for interpolation of velocity.
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