GPS精密星历卫星轨道插值运算（采用切比雪夫拟合）matlab程序。直接运行chebshev2.mat文件即可，结果显示在doucument2.mat文件中-Precise GPS satellite orbit ephemeris interpolation operation (using Chebyshev fitting) matlab program. Can run directly chebshev2.mat file, the results are displayed in t