GPS在公路控制网中的应用分析  

Application and Analysis of GPS in Highway Control Network

作　　者：钱承军 Qian Chengjun(Nanjing Institute of Surveying,Mapping&Geotechnical Investigation,Co.,Ltd,Nanjing 210019,China)

机构地区：[1]南京市测绘勘察研究院股份有限公司

出　　处：《城市勘测》2019年第6期85-88,共4页Urban Geotechnical Investigation & Surveying

摘　　要：GPS在建网方面精度高、选点灵活、观测时间短,作业效率高。以104国道浦泗立交至南京二桥段公路(浦仪公路西段)控制网为例,对公路段进行一级静态控制测量,对桥梁段进行二等控制测量,对公路两种等级控制网进行基线解算、无约束和约束平差,并进行误差分析,从而论述GPS技术可以对公路控制网进行高精度平面控制,最后对公路控制网中的技术要点进行总结并提出建议。GPS has advantages in network constructions such as high precision,flexible selection of control points,short observation time and high work efficiency. Take the highway control network of the 104 National Highway Pusi Interchange to the Nanjing Second Bridge Section(the western section of Puyi Highway) as an example. Implement a first-level static control measurement on the road section and second-order control measurement on the bridge section,then carry out baseline,unconstrained and constraint adjustment solution of two grades of highway control networks. Lastly,make error analysis on it to demonstrate the high-precision plane control of GPS technology on highway control network. Finally,summarize the technical points in the road control network and make recommendations.

关 键 词：静态控制测量 公路控制网 平差 误差分析 

分 类 号：P228[天文地球—大地测量学与测量工程]