本文重点介绍了如何通过GPS卫星星历来计算卫星的坐标，采用了直接法、拉格朗日插值法以及切尔比雪夫拟合的方法分析通过广播星历计算的精度-This paper focuses on how the GPS satellite has always calculate the coordinates of the satellite, using the direct method, Rugby Long Day interpolation Mitchell Chebyshev fitting m

计算机数值方法，newton插值法，实现了所有组合情况的求和算法-Computer numerical methods, newton interpolation method to achieve a combination of all cases of summation algorithm