The article expounds the establishment method, establishment process, establishment principles and points for attention of the three dimensional control network in GPS highway engineering survey.
阐述了GPS公路勘测三维控制网的构建方法、构建过程、构建原则及注意事项。
Based on the practice of high-grade highway tunnel GPS survey, establishment and data processing method for independent coordinate system of tunnel GPS control network are introduced in the paper.
本文根据生产实践，介绍了高等级公路隧道GPS控制网的建立及用于施工坐标系的数据处理方法。
GPS control survey, digital photogrammetry, remote sensing geology and CAD are the new technologies used for highway planning, survey and design, both at home and abroad.
GPS控制测量、数字摄影测量、遥感地质、计算机辅助设计是目前国内外公路规划和勘察设计中所采用的新技术。
In this paper, the error of light-electric range finder in highway curve survey is analysed. The control distance between two survey station is presented so as to control the precision.
本文对光电测距仪进行公路曲线测设的误差大小作了分析，并结合公路曲线测设的允许误差进行分析对比，提出了控制置镜点到测点的距离以达到测设精度要求。
In this paper, the error of light-electric range finder in highway curve survey is analysed. The control distance between two survey station is presented so as to control the precision.
本文对光电测距仪进行公路曲线测设的误差大小作了分析，并结合公路曲线测设的允许误差进行分析对比，提出了控制置镜点到测点的距离以达到测设精度要求。
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