最后通过计算江苏省北京54坐标数据和C级GPS网数据对两种坐标转换方法进行了比较分析，并得出了有益的结论。
Finally, an analysis and contrast between two methods is given through calculating the data of BJ54 coordinate points and C-class GPS network. A good conclusion is drawn.
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。
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.
本文以大水坡GPS网为例，说明仅采用地面网的起算数据，在地面网的坐标系统中进行GPS网平差的方法，并对平差成果作多方面的分析比较。
This paper takes Dashuipo GPS network as an example that only adopting the original data of the plane network and the adjustment method of the GPS network in the plane control system, moreo…
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