论文部分内容阅读
通过研究精密机载激光扫描测量的激光数据采集平台、激光点云控制布设测量及数据精化处理等关键技术,实现平面精度优于0.05 m,高程精度优于0.02 m的现有道路基础设施三维空间信息的精密采集,从而在不干扰现有道路交通流的情况下,安全、高效地获取高速公路改扩建工程勘测设计信息,代替人工上路测量。在此基础上,基于精密激光点云数据自动提取道路特征信息,建立现有道路路面、路基的精密模型,恢复现有道路路基、边坡的精确形态,实现精密机载激光扫描测量与高速公路改扩建的协同设计。京港澳高速公路涿州(京冀界)至石家庄段(K45+000-K236+000)应用表明:该方法经济、高效、安全,成果精度完全满足高速公路改扩建详测与施工图设计要求。
The key technologies of laser data acquisition platform for precision airborne laser scanning measurement, layout measurement of laser point cloud control and data refinement are researched to realize the existing three-dimensional (3D) road infrastructure with plane precision better than 0.05 m and elevation accuracy better than 0.02 m Precision collection of spatial information, so as to safely and efficiently obtain survey and design information of expressway reconstruction and expansion project instead of artificial on-road measurement without disturbing the existing road traffic flow. On this basis, the road feature information is automatically extracted based on the precise laser point cloud data to establish the precise model of the existing road pavement and subgrade, to restore the exact shape of the existing roadbed and slope, to achieve precise airborne laser scanning and measurement of highway Collaborative design of renovation and expansion. Application of the Jingzhou-Jingzhou-Shijiazhuang-Shijiazhuang-Shijiazhuang Expressway to Shijiazhuang Section of Beijing-Hong Kong-Macao Expressway shows that this method is economical, efficient and safe, and the precision of the results fully meets the design requirements of the detailed survey and construction drawings of expressway reconstruction.