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GPS测高技术代替四_五等水准测量精度探讨.pdf

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· · 水科学与工程技术 66 年第 期 2009 4 GPS测高技术代替四、五等水准测量精度探讨 1 1 2 曲佳瑞 ,卢吉锋 ,周运维 ( 沧州水利勘测设计院,河北沧州 ; 河北省石津灌区管理局, 石家庄 ) 1. 061001 2. 050081 摘 要:通过对沧州地区 拟合高程与水准高程的精度对比分析,提出了利用 观测值加已知高程点拟合求待定点高程的方法, GPS GPS 为 技术代替四、五等水准测量方法积累了经验。 GPS 关键词:GPS测高;精度分析;拟合高程;大地水准面 中图分类号:V412 文献标识码:A 文章编号:1672-9900 (2009)04-0066-03 The discuss of the precision in the GPS height replacing the 4 and 5 grade leveling 1 1 2 , , QU Jia-rui LU Ji-feng ZHOU Yun-wei (1.Cangzhou Institute of Hydrology Survey an Design , Cangzhou 061001 ,China ; 2.The District of Shijin Irrigation , Hebei Province, Shijiazhuang 050081, China ) ’ Abstract:The technic of GPS elevation hasn t been fully used in surveying.This paper analyses the precision of the GPS planned (拟合) elevation and the trditional level elevation with a lot of data and my experience accumulated in many work- ing years. These analysis provide technical reference for the theory-adding GPS measuring value to the known point to get the elevation of the unknown point.So the technic of GPS may take the place of lower grade leveling. ; ;
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