基于控制点提高GNSS失锁时点云数据精度的研究  

Research on improving the accuracy of the point cloud on the status of GNSS signal loss based on control points

作　　者：孙波中[1,2] 潘清元 鲍彦奇 Sun Bozhong;Pan Qingyuan;Bao Yanqi(TianShui Sanhe Digital Surveying and Mapping Institute Co.,Ltd.,Tianshui 741000,China;Gansu Engineering Technology Research Center for Surveying and Mapping,Tianshui 741000,China)

机构地区：[1]天水三和数码测绘院有限公司,甘肃天水741000 [2]甘肃省测绘工程技术研究中心,甘肃天水741000

出　　处：《矿山测量》2020年第6期110-113,共4页Mine Surveying

摘　　要：文中以Trimble MX8车载移动测量系统在GNSS信号失锁环境下采集的点云数据为例,从控制点布设网形和布设密度两方面设计试验进行点云校正,研究分析了其对点云精度的影响,并据此给出了控制点最佳布设方案,为今后车载移动测量系统在工程实践中的此类工作提供了参考。In this paper,taking the point cloud data collected by Trimble MX8 vehicle-mounted mobile measurement system in the GNSS signal loss environment as an example,the point cloud registration was carried out from designing and testing of two aspects of the control point layout network shape and the layout density and the influence on the point cloud accuracy was studied and analyzed,and the best scheme of setting up control points was provided to provide a reference for the engineering practice of the vehicle-borne mobile surveying system.

关 键 词：控制点布设方法 车载移动测量系统 GNSS失锁 点云校正 点云精度 

分 类 号：P228.4[天文地球—大地测量学与测量工程]