This paper introduced the consideration about design, establishment and the actualization process of the GPS three-dimensional datum network in Zhenhai city.
介绍了镇海区GPS三维基准网的设计思路、建立方法及实现过程，探讨了GPS水准代替四等水准在本项目中的实现情况。
This paper introduced the consideration about design, establishment and the actualization process of the GPS three-dimensional datum network in Zhenhai city.
介绍了镇海区GPS三维基准网的设计思路、建立方法及实现过程，探讨了GPS水准代替四等水准在本项目中的实现情况。
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