Abstract：Research purposes: Aiming at the defects of the existing CPⅢ network and data processing technology，and combining with the characteristics of the CPⅢ network，this paper presents the three － dimensional adjustment function model based on the ellipsoid datum to give full play to the effect of measuring result by accurate total station for enhancing the reliability of the measurement data processing．
Research conclusions: The model is based on the ellipsoidal coordinate system without consideration of the project deformation in adjustment，and it can directly and synchronously process the independent and original observational data by 3D adjustment processing and be available for the network of any size． Besides，with this function model，it is more conducive to conduct the combined adjustment with the GPS values and terrestrial observation values，and it can directly do the statistical test to the original observation values in the adjustment．
徐万鹏. 基于椭球基准的高速铁路CPⅢ网三维平差技术[J]. 铁道工程学报, 2012, 29(7): 5-10.
XU Wan － peng. 3D Adjustment of CPⅢ Network for High － speed Railway Based on Ellipsoid Datum. 铁道工程学报, 2012, 29(7): 5-10.
2012, Vol. 29 
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