Protecting the coastlines of the North West British Isles - North West Strategic Regional Coastline

Author: Simon Hall

Sefton Council staff receive their training on the Pegasus Backpack solution

西北战略区域沿海监测计划于2008年建立，以协调英格兰西北海岸的沿海监测数据的收集。It is part of the National Network of Strategic Regional Coastal Monitoring Programmes that cover the coastline of England and Wales. Sefton Council is the lead authority for the north west programme and is responsible for the delivery of the project on behalf of the other English coastal authorities in the North West and North Wales Coastal Group.

About the Project

The monitoring programme aims to provide data and information to coastal managers to enable the sustainable management of their coastlines. The distance the programme needed to monitor was a total of 750 miles of beaches, sand dunes, saltmarshes, cliffs, and hard defences with the overall goal of the project being to capture near shore and onshore data across the north west coastline. This data would allow the councils to better understand the coastal processes on a local and cell wide basis and thus make better informed decisions.

Challenges

利物浦和绍斯波特之间的22英里沙丘的一部分，被称为福利海岸线

Flood risk and coastal erosion are serious issues for authorities in north west England. The councils take these risks very seriously, having suffered severe coastal flooding a number of times in the early 2010’s. In addition, parts of north west are influenced by shallow groundwater and the flood risk from surface water and main rivers. These factors plus the coastal geomorphology makes the north west area sensitive to the effects of climate change.

To continuously monitor such a large stretch of coastline takes a huge amount of time and effort for the council and its contractors, making time management one of the biggest challenges in a project of this scale. Coastal erosion is a constant natural process, and to capture the amount of data the councils required, the time constraints were critical.

“We had seen the benefits of laser scanning with the C10, but, when scanning miles of hard and soft defences, it is very time consuming. We needed a solution that combined speed, robustness and portability”

安德鲁·马丁（Andrew Martin） - 塞夫顿委员会（Sefton Council）洪水和沿海侵蚀风险管理高级官员

执行

为了克服时间问题，西北海岸监测计划比较了他们现有的监测设备（Leica C10,CS20andViva GS16), and looked at which other solutions on the market could provide the necessary requirements for their project.

过去，他们利用了GNSS receivermounted onto a quad to drive up and down the beach taking levels. They purchased a Leica C10 in 2011 to scan the dunes, using a GPS to orientate the scan each time they set it up. In addition to the C10 and GNSS receiver, the council also purchased an UAV (DJI Phantom) for aerial scanning.

Initial interest was also expressed in the newGS18i;但是，一分钟的爆发不会给理事会提供所需的速度来完成所需的调查。因此，沿海监测计划购买了飞马：背包solution, the award-winning wearable reality capture platform that collects data indoors, outdoors and underground.

PEGASUS的高度人体工程学设计：背包结合了五台可提供360度的摄像机，以及两个带有超光碳纤维底盘的激光镜。它可以以最高的准确性来实现广泛有效的室内或室外文档。Pegasus：背包旨在用我们的标准外部触发器和同步端口输出来表现传感器平台。

这种独特的移动映射解决方案设计用于快速和常规的现实捕获。bob综合app赌博它是完全便携式的，使沿海监测计划能够快速完成所需的测量和监视工作，而无需在沙丘上拖动重型设备。

Full training was provided to members of staff from the coastal monitoring programme from Leica Geosystems, allowing them to quickly get to grips with the system and begin their work in earnest.

Benefits

The飞马：背包使进步的专业文档成为沿海监测计划的现实。它同步图像和点云数据，因此确保了整个生命周期管理的沙丘的完整文档。通过使用SLAM（同时定位和映射）技术和高精度IMU，它确保了沿海监测计划可以通过GNSS中断获得准确的定位。

The point cloud classification toll segments the LiDAR data into roads, pavements, buildings, vegetation, and street furniture classes, all automatically. This new feature, available in the latest release of Pegasus:Manager software and valid for all Mobile Mapping Solutions (Pegasus:Swift, Pegasus:Two Ultimate and Pegasus:Backpack), allows users to exclude all undesirable data with no need of manual cleaning process.

“In this particular case, it allows the coastal monitoring programme to exclude all coastal vegetation from their datasets. This is possible due to Machine Learning and Deep Learning Artificial Intelligence algorithms developed within Hexagon Geosystems.”

安东尼奥·门德斯（Antonio Mendes） - 移动映射业务开发和销售，莱卡地理系统英国

The solution helped the coastal monitoring programme to make better and faster decisions in emergency situations due to access to more accurate data. Evacuation plans and route mapping benefit from clear and detailed images and point clouds that alert authorities to any changes.

“The Pegasus stood out as it is able to capture data at speed, we trialled it on the back of a quad bike, and it does not have the weather constraints or licensing issues associated with a UAV. Best of all, it is fairly simple to use and process the data. The system has enabled us to perform more surveys and we plan on expanding this, before Pegasus we would do 3 may be 4 laser scans a year. Since April 2021 we have done 5 and have more planned. Arguably we have increased productivity.”

安德鲁·马丁（Andrew Martin） - 塞夫顿委员会（Sefton Council）洪水和沿海侵蚀风险管理高级官员

对未来的看法

With the successful implementation of the飞马：背包solution, the coastal monitoring programme are now planning on doing baseline scans of the hard coastal defences across the North West, with the goal of providing accurate information to the coastal authorities to allow them to ensure these defences are up to the required standard to protect not only the environment, but local residents from the risks of flooding and erosion.