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。
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