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中文摘要：
隧道贯通三维坐标的精度会直接影响施工的安全、进度和成本，因此，对测量的精度要求很高。本文采用静态GPS进行测量，获取三维坐标，基于移去一恢复拟合方法、二次多项式曲面拟合模型、移动曲面拟合模型三种方法进行高程异常拟合，利用伊通伊丹冯家岭分水枢纽工程的实测数据进行了验证。通过精度对比分析，移去一恢复和二次多项式曲面拟合模型应用于较小型隧道贯通的高程异常拟合精度最高。
英文摘要：
As the position accuracy of three - dimensional coordinates of tunnel through will affect the construction safety, schedule and cost, demanding for measurement accuracy is high. Adopting Static GPS measurement, to obtain 3D coordinates, based on three methods of height anomaly fitting of remove - restore fitting method, the quadratic polynomial surface fitting model, moving surface fit- ting model. Validated by the measured data of Yitong Yidan Fengjialing Water Diversion Project Engineering. Through the comparative analysis of accuracy, the accuracy of remove - restore and the quadratic polynomial surface fitting model is the highest applied to the height anomaly fitting for tunnel through.
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