【作者】 吴菲； 高成发；

【Author】 WU Fei , Gao Cheng-fa (Transportation College of Southeast University , Nanjing 210096)

【机构】 东南大学交通学院；

【摘要】 本文简要介绍了精密单点定位(Precise Point Positioning—PPP)的发展背景与定位原理,探讨了精密单点定位中的卫星钟差插值问题,利用东南大学自主研发的软件SEU_PPP计算和分析了实测数据,并以P3软件的解算值为真实值,求出不同阶数的拉格朗日插值所得解算值与真实值的误差,进行比较,结果表明:使用按照滑动拉格朗日插值的方法选取插值节点的9阶拉格朗日多项式进行插值,效果比较好。更多还原

【Abstract】 This paper briefly describes the development and theory of Precise Point Positioning(PPP) , discusses the problem of satellite clock error interpolation in precise point positioning ,using SEU_PPP software developed by Southeast University calculation and analysis of experimental data, the data of P3 software as the true value, and calculate the error between the value of Lagrange interpolation at different levels and true value , compare the results show that using sleek Lagrange interpolation method to select nodes and 9-order Lagrange polynomial interpolation is quite a good choice.更多还原