GPS水准法在太湖岛屿高程测量中的应用  

Application of GPS Leveling Method in Height Measurement of Taihu Island

作　　者：柴志勇[1] 冯迎旭 CHAI Zhi-yong;FENG Ying-xu(China Water Resources Beifang Investigation,Design and Research Co.,Ltd.,Tianjin 300222,China)

机构地区：[1]中水北方勘测设计研究有限责任公司,天津300222

出　　处：《海河水利》2022年第6期109-112,共4页Haihe Water Resources

摘　　要：采用一种基于垂线偏差优化的GPS水准方法,实现跨障碍高程传递,并在太湖岛屿高程测量进行了应用研究。应用实例中,测量了一条闭合GPS水准环线,总长156.1 km,最终实现了太湖6处跨岛屿高程传递。经精度评定,GPS水准测量闭合差及每公里全中误差均满足三等水准测量要求。该方法解决了太湖岛屿高程测量问题,对相关的跨障碍高程传递工程项目具有重要的借鉴意义。A GPS leveling method based on the optimization of vertical deflection is adopted to realize height transference across obstacle,and the application research in the height measurement of Taihu Island is carried out.In the application example,a closed GPS leveling loop with a total length of 156.1km is measured,and six height transference across obstacle in Taihu Lake is finally realized.After accuracy evaluation,the closure error and total error per kilometer of GPS leveling meet the requirements of third-class leveling.This method solves the problem of height measurement of Taihu Island,and has important reference significance for the related height transference across obstacle projects.

关 键 词：太湖岛屿 跨障碍高程传递 GPS水准法 地面垂线偏差 高程异常差 

分 类 号：TV221.1[水利工程—水工结构工程]