【摘要】 根据二次曲面函数拟合模型,多面函数拟合模型的优点探讨二次-多面函数拟合模型的精度,并且以某铁路的CP1点作为实验数据,结合Matlab编程建模,分别进行二次曲面拟合、多面函数拟合、二次—多面函数拟合并且进行精度比较。实验证明,组合模型的高程拟合精度要高于其中单一模型的精度。更多还原

【Abstract】 In this paper,based on the advantages of quadratic surface function and the multifaceted function fitting model to explore the accuracy of quadratic-multifaceted function model. The CP1 of a railway as the experimental data; Combined with Matlab programming model; the fitting of quadratic surface fitting,multifaceted function fitting and quadratic-multifaceted function are proposed respectively and the accuracy comparison is carried out. The experimental results show that the accuracy of the composite model is higher than that of the single model.更多还原