挪威的公路建设

如果您打算通过Stavanger和Bergen到Trondheim开车从Kristians和Trondheim开车，请搭配大约1,100公里的车程，可以在欧洲路线E39上乘坐最多21个小时的汽车。由于渡轮必须越过七个市长峡湾，您也可以在挪威西部美丽的景观中获得广泛的见识，因为这次旅行可能会持久。

当联合国欧洲经济委员会（UNECE）在其“欧洲主要国际交通动脉协议”中裁定2008年为公路网络建立国际标准时，设定了扩大E39的计划。在协议中，挪威政府的“国家运输计划”旨在将E39升级到平均速度至少80至100 km/h的道路，车道宽度为3.5米，避免进行任何轮渡交通。

To cut the trip on the E39 down to 10.5 hours, the Norwegian Public Roads Administration or “Statens vegvesen” is considering installing either suspension or floating bridges or sub-merged floating tunnels in the fjords to supersede the ferry traffic. The nearly 23 billion Euros infrastructure project would produce the world’s longest suspension bridge at a main span of 3,700 metres or the world’s first submerged floating tunnel to cross the Sognefjord.

该项目始于2015年初，目的是将目前的两车道高速公路与其他道路建设工程一起使用11公里的隧道转变为四车道。整个项目定于2035年之前进行竞争。

To keep construction on schedule and provide contractor oversight, Statens vegvesen contracted Hawkeye AS, a surveying firm specialising in final documentation of 3D deliverables and a joint venture of Veseth AS and Rune Samnøy of Samnøy AS, to provide orthophotos and models of the project. To do so, the 2014 founded firm turned to Leica Geosystems UAV (Unmanned Aerial Vehicle) solution to collect the needed imagery for tracking costs of mass movements, documenting progress and keeping stakeholders up-to-date. Using state-of-the-art technology on the flying multisensory platform helps to capture as many details as possible to create fine grained data.

A 360-degree view from above

Capturing data every two weeks with routine positions throughout the firm’s five-year contract on the project from January 2015 to January 2020, Veseth AS has created its own online gallery of 360-degree images taken with Leica Geosystems UAV solution and a special installation to mount a Nikon D800. To date, the gallery onhttp://360aircamdrone.net/e39sr/自2015年11月以来，主机超过100张照片。这些照片以百分之厘米的精度拍摄，在所有施工会议中都使用，帮助Statens Vegvesen计划项目的每个步骤。项目管理将照片用于承包商和其他利益相关者的质量控制目的。在与公众沟通时，该网站也是一种新颖性。为了提高透明度，公共平台可以洞悉当前项目状态，计划的任务并分为重要步骤。

为了在固定位置上创建可靠且可重复的数据，该公司使用内部构建的飞行计划软件来调整摄像头的高度，高度，旋转和角度。该软件还提供了在任务的估计持续时间，设想的路线以及GSD（地面采样距离）拍摄图片的信息。

“Providing aerial imagery from an UAV is new for us, and the excellent resolution of the pictures of different construction areas is helping the overall project to flow smoothly,” said Mads Solberg Eriksen, Statens vegvesen quality advisor. “The 360-degree view possible with Leica Geosystems UAV makes project documentation easier and faster.”

看到整张图片

鹰眼和Veseth尤其称为佛r its volume calculation of terrain both above and below water. As a major challenge to the project has been the mass removal of non-native plants to the natural habitat during the construction of the 11-km tunnel, the firm has been combining several Leica Geosystems solutions for precise volume calculations and documentation. Whereas Leica Geosystems UAV provides a clear view with its 36.3 megapixel Nikon D800 from above for quality control, the firm uses a Leica Geosystem C10 ScanStation and Leica Geosystems Cyclone software to create detailed 3D models of the mass to be removed. The Leica Geosystem TS16 total station and GNSS solutions provide accurate measurements for quantity surveys. With the accuracy of the Leica Geosystems ScanStation C10, the laser scanner generates detailed point clouds even on long range up to 300m with its full 360º x 270º field-of-view.

“With Leica Geosystems solutions, we are able to provide the client with the most up-to-date information faster than ever before,” said Stian Veseth, Veseth AS CEO and part of the joint venture company Hawkeye AS. “We are able to rely on solutions that work every day like they should, and we have complete access to a network of experienced professionals that we use to stay ahead in business.”

Combining the various solutions, the firm is consistently able to provide the client with a full picture of the worksite from above ground and below the water of the fjords. One of the biggest infrastructure projects in Norway’s history, the reconstruction of the E39 highways proves how UAVs compliment traditional surveying practices for an even bigger and clearer picture of what exactly is happening.