公路勘测设计中机载激光扫描技术应用的关键措施  

Key measures for the application of airborne laser scanning in highway survey and design

作　　者：郑特 宋伟 曹明 Zheng Te;Song Wei;Cao Ming(Zhejiang Institute of Communications Co.,Ltd.,Hangzhou 310012,China)

机构地区：[1]浙江数智交院科技股份有限公司,杭州310012

出　　处：《工程勘察》2023年第5期75-78,共4页Geotechnical Investigation & Surveying

摘　　要：本文针对柯桥至诸暨高速公路项目机载激光三维测量数据,采用大量RTK(实时差分定位)数据和水准数据对点云质量进行精度评定,认为在全线范围内,机载激光数据精度能够满足公路项目初、定测要求,但是在局部关键工点处,机载激光数据精度仍难以满足设计需求。针对该情况并结合一些其他设计要求,本文归纳了机载激光数据在公路勘测设计中大范围应用区别于一般DEM(数字高程模型)生产的技术要点。Based on the airborne laser 3-D measurement data of Keqiao-Zhuji Expressway project,this paper uses a large amount of RTK(real-time differential positioning)data and leveling data to evaluate the accuracy of the point cloud.The accuracy of airborne laser data can meet the initial survey requirements across the board,but at the local key work points,the accuracy is still difficult to meet the design requirements.For this situation and combined with some other requirements of the design,the specific technical requirements for the extensive application of airborne laser data in the highway survey and design are summarized,which are different from the using of general DEM production.

关 键 词：机载激光扫描 公路勘测设计 数字高程模型 

分 类 号：U412[交通运输工程—道路与铁道工程]