99天内的70英里高速公路映射到完整的工程设计

E.L Robinson一家土木工程和规划公司Engineering拥有40年的运输规划，分析和设计经验，由美国公路部（WVDOH）选中，以完成苛刻的70英里的高速公路映射project in only99 days。

This transportation project had no existing as-built map. To meet the timeline, the data had to be collected by mobile mapping, including:

• 映射一个70英里,双车道公路
• 12桥的静态扫描
• 曲线扩大和滑动修复
• Creation of the Digital Terrain Model (DTM)
• 提取地形特征，例如路面边缘，条纹，标牌和公用电线杆
• 涵洞的调查和检查超过500个涵洞和管道
• Setting permanent control for bridges.

跟上苛刻的期限

Given the short delivery time of full design deliverables, E.L. Robinson Engineering began with the mobile mapping data acquisition immediately. The challenge was with completing the engineering deliverables needed from the mobile data – this is where theLeica Pegasus:Two移动传感器平台用户网络提供了重要的优势。Rice Associates，Inc。是一家地理空间服务公司，可提供常规测量，内部摄影测量，静态，移动和陆地激光雷达扫描，还拥有Leica Pegasus：两个移动传感器平台。该公司能够支持E.L.罗宾逊工程具有数据提取能力，以帮助满足项目时间表。

“Surveying a highway requires capturing enormous amount of data with the highest precision and standards. The Leica Pegasus:Two enabled us to collect millions of points per second; the team每天映射5英里, and it took us only14 days为了完整的数据提取70 miles of a two-lane highway，”said Obadyah Foord, regional director at Rice Associates.

Given that both companies, E.L. Robinson Engineering and Rice Associates, use the same hardware and software, the 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were used to control the mobile scan, these were scanned at每小时40公里有目标every 610 metres。为高速公路设计创建了DTM，其中包括：

• 原始点云
• 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.“78亿原始数据点were collected, and we produced在45天the DTM, edges of pavement, guardrail, utility poles and signage for the entire length.”

“The Leica Pegasus:Two provided a rapid data capture solution for this large-scale project, saving us time and reducing safety risks,”said Rayburn.“With Rice Associates support,we delivered the project on time and within budgetthanks to the speed of accuracy delivered by using the Pegasus:Two.”