70 Miles of highway mapping to full engineering design in 99 days

作者：Penny Boviatsou

E.L RobinsonEngineering, a civil engineering and planning firm with 40 years of experience in transportation planning, analysis and design, was selected by West Virginia Department of Highways (WVDOH) in the United States to complete a demanding70-mile highway mappingproject in only99 days.

该运输项目没有现有的原始地图。为了满足时间表，必须通过移动映射收集数据，包括：

• 绘制一条70英里的两车道高速公路
• Static scanning of 12 bridges
• 曲线扩大和滑动修复
• Creation of the Digital Terrain Model (DTM)
• Extraction of topographic features, such as edge of pavement, striping, signage and utility poles
• Culvert survey and inspection of more than 500 culverts and pipes
• 设置桥梁的永久控制。

Keeping pace with demanding deadlines

考虑到完整设计可交付成果的短交付时间，E.L.鲁滨逊工程始于移动映射数据采集。面临的挑战是完成移动数据所需的工程可交付成果 - 这是Leica Pegasus:Twomobile sensor platform user network provided asignificant advantage. Rice Associates, Inc., a geospatial services firm that provides conventional surveying, in-house photogrammetry, static, mobile, and terrestrial LiDAR scanning, also owns Leica Pegasus:Two mobile sensor platform. The company was able to support E.L. Robinson Engineering with the data extraction capacity to help meet the project timeline.

“对高速公路进行测量需要捕获具有最高精度和标准的大量数据。Leica Pegasus：两个使我们能够每秒收集数百万分。团队每天映射5英里, and it took us only14 daysfor the complete data extraction of the70 miles of a two-lane highway，”赖斯协会地区总监Obadyah Foord说。

鉴于两家公司E.L.鲁滨逊工程和大米协会，使用相同的硬件和软件，data integration and exchange were seamless; bringing scheduled delivery of data and keeping engineers moving forward into final design without delays.

在一个具有挑战性的项目上蓬勃发展

A total of 36 Real Time Kinematics (RTK) base stations were used for this project to locate targets and other topographic features. While120个移动扫描仪目标被用来控制移动扫描，这些被扫描40 kilometres per hourwith a targetevery 610 metres. A DTM was created for the highway design, which included:

• The raw point cloud
• Isolated ground points
• A triangulated surface mesh.

“办公室工作的测量师能够从点云和图像进行传统的地形调查，”said Tom Rayburn, manager of surveying at E.L. Robinson Engineering.“7.8 billion raw data points收集了，我们生产了in45天the DTM, edges of pavement, guardrail, utility poles and signage for the entire length.”

“ Leica Pegasus：两个为这个大规模项目提供了快速的数据捕获解决方案，节省了我们的时间并减少了安全风险。”雷本说。“With Rice Associates support,我们按时和预算范围内交付了该项目得益于使用Pegasus提供的速度和准确性：两个。”