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中文摘要：
针对常规GPS轨道标准化方法随插值阶数的增加会出现精度衰减的情况，提出移动区间的概念并应用于GPS轨道标准化过程。利用美国国家大地测量局提供的GPS精密卫星星历进行计算，结果表明：当插值阶数增加时，采用移动区间方法能有效解决精度衰减问题，提高了GPS轨道标准化的精度，从而使GPS标准化的精度提高到亚厘米级。
英文摘要：
It is found that when conventional methods, such as Trigonometric Interpolation, are used for standardization of GPS satellite orbits, and the order of interpolation or fitting increases, the accuracy will decrease. Thus, a conception of moving intervals is proposed solving this problem. The results from computing and analyzing the precise ephemeris supplied by National Geodetic Survey of U. S. as an example show that this standardization method based on the moving intervals can solve the problem on accuracy decreasing i. e. ,as the order increases, in the same time, the accuracy of standardizing GPS satellite orbits is improved to the level of sub-centimeter.
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