GPS高程在隧道高程控制中的应用研究  

Combination GPS Elevation with Precision Trigonometric Leveling Method in Tunnel Control Application

作　　者：杨渊[1] 施昆[1] 

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093

出　　处：《导航定位学报》2013年第1期96-100,共5页Journal of Navigation and Positioning

摘　　要：在野外水准控制点遭到破坏,缺乏足够高程数据的情况下进行高程控制测量,可以先布设GPS控制网,GPS控制点应包括稳定的可用高程控制点。然后以一个高程控制点为起算点,实施三角高程闭合水准导线测量,水准路线包含所有的GPS控制点。在小区域范围内,假设该区域高程异常值为常数;从而可以在实施三角高程测量外业时使用高精度的WGS84大地高数据对测量数据进行实时的检核。实践表明:该方法测量精度高且工作效率令人满意,完全能满足山区的工程测量需要。In case of elevation data can not satisfy surveying work when a vertical control survey is on processing,which usually attribute to the destruction of height control points,the GPS control network should be established firstly.As the component of the control network,GPS control points shall include all of the available and steady height points.Starting from a known height point the EDM trigonometric leveling can be measured;and the route eventually become a closed loop which contains all GPS control points.The elevation anomaly could be supposed to be a constant in a small area thus the results of trigonometric leveling can be checked in real time by compared with the high-accuracy WGS84 geodetic height data.The practice shows that measuring accuracy and measuring efficiency of this method can meet requirements of the mountain engineering measurement.

关 键 词：高程控制 GPS静态观测 WGS84大地高 三角高程 

分 类 号：P216[天文地球—测绘科学与技术]