根据精密星历提供的等时间间隔点上的卫星坐标,采用切比雪夫多项式拟合的方法,选用达到精度要求的最佳拟合多项式阶数,对GPS卫星轨道进行标准化,从中得出:选用不同的多项式阶数直接影响到拟合的精度。
According to coordinates of satellites that are provided by precision ephemeris, we choose the required accuracy of the polynomial fitting,and use the Chebyshev polynomial simulation to fit the GPS satellite orbit standardization. We draw from the example that the different rank of the polynomial you choose will affect the precision.