正常高系统
正常高系统-
统一正常高系统的桥梁GPS水准的有效解法
Effective Solution of Bridge GPS Level Network of Unifying Normal Height System
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介绍了与GPS高程系统有关的几个主要概念，即大地高系统、正高系统、正常高系统及垂线偏差；
This paper introduced the conceptions concerning GPS height system , such as geodetic , orthometric and normal height system and deflection of the vertical .