Aitken插值法插值GPS卫星精密坐标

Using the Aitken Interpolation Method to Interpolate Precision GPS Coordinates

GPS卫星坐标的计算是GPS数据处理中重要的一个步骤,其精度直接影响到GPS定位的结果。在精密单点定位的数据处理中主要是通过内插精密星历的方法获取任意历元的精密卫星坐标,目前常用的内插方法有拉格朗日插值法、Neville内插法、切比雪夫插值法[1、6]。详细地介绍了Aitken插值法并对这几种算法的结果进行了分析比较,最后得出Aitken插值法也能满足实际应用的精度要求。

The calculation of GPS satellite coordinate is a important step in GPS data processing, its accuracy directly affects the result of GPS positioning. Any epoch of precision satellite coordinates can be got primarily through interpolated methods in the precise point positioning of the data processing, the common interpolation methods are Lagrange interpolation method, Neville admixture-frequency syntheses, and chebyshev interpolation method [1、6]. In this paper, it introduced Aitken interpolation method in detail,then analysed and compared the result of these algorithm, finally reached that the Aitken interpolation method also could meet the accuracy of the practical application.