隧道洞外GPS控制网引起的横向贯通误差严密解算方法研究  

Study on Method of Strictly Solving Lateral Link-up Error Caused by GPS Control Network Outside Tunnel

作　　者：闫伟新 YAN Weixin(Jiangsu Geologic Surveying and Mapping Institute,Nanjing 211102,China)

机构地区：[1]江苏省地质测绘院

出　　处：《测绘与空间地理信息》2019年第11期35-38,共4页Geomatics & Spatial Information Technology

基　　金：江苏省地质矿产勘查局科研项目(2016-KY-03)资助

摘　　要：针对目前隧道洞外GPS控制网横向贯通误差严密计算方法在理论上的不足,本文基于坐标转换模型和协因数传播定律推导了隧道独立坐标协因数阵的计算公式,研究了基于验后单位权中误差和隧道独立坐标协因数阵的隧道洞外GPS网引起的横向贯通误差严密计算方法。之后,以某特长铁路隧道工程洞外GPS控制网实测数据作为研究对象,阐述了横向贯通误差严密计算的技术流程。研究成果为控制隧道工程准确贯通提供了参考。Aiming at the theoretical shortcomings of the current rigorous calculation method of the horizontal penetration error of the GPS control network outside the tunnel,the calculation formula of the tunnel independent coordinate co-factor matrix is derived based on the coordinate transformation model and the co-factor propagation law,and the error based on the unit weight after the test is studied.And the tunnel-independent coordinate co-factor matrix of the tunnel through the GPS network caused by the horizontal penetration error rigorous calculation method.Finally,taking the measured data of the GPS control network outside the tunnel of a special long railway tunnel as the research object,the technical flow of the rigorous calculation of the transverse penetration error is expounded,and the research results provide a reference for the accurate control of the tunnel engineering.

关 键 词：隧道工程 洞外控制测量 横向贯通误差 协因数阵 

分 类 号：P258[天文地球—测绘科学与技术]