陆上空气

Author: Benjamin Federmann, May 2016

The gravel quarry of Knobel-Bau also includes two artificial lakes which were surveyed with a specially-equipped boat for hydrographic surveys. What was missing, though, was an aerial view of the entire quarry. Focusing on surveying engineering technologies, IngenieurTeam GEO was contracted to determine the remaining volume in Knobel-Bau’s quarries. By creating georeferenced orthophotos and digital terrain models using the unmanned aerial vehicle (UAV) from Leica Geosystems, the firm was able to present the current situation in detail and provide an effective inventory reduction plan. Using the airborne data, the engineers had the possibility to precisely record areas that were difficult to access and include riparian regions and to the calculation.

对于这种残留体积计算，旋钮BAU GMBH砾石坑，尤其是地理参考的正赶脚和数字地形模型，可以很好地可视化测量和计算结果。通过使用Leica Geosystems无人机解决方案生成空气传播的数据。

“有了这个历史overv详细iew, our customer can coordinate the extraction processes more precisely,” said Martin Schwall, owner and managing director of IngenieurTeam GEO. “This enables the customer to securely plan what to do with the remaining material, based on the most current and accurate information available.”

Combining to overcome unique challenges

Ingenieurteam Geo是Leica GeoSystems升级和GNSS仪器的长期使用者，当它成为2014年Leica GeoSystems Portfolio的一部分时，Geo首先对无人机技术产生了兴趣。将测量组件简化为快速有效的项目过程是追求空间空间的关键因素数据采集​​。

“The accuracy of the collected data is important to us, but also the reliability, functionality and quality of all surveying equipment,” said Schwall. “We decided to use this UAV for its trusted reputation in the industry. We then trained one of our employees to become a professional pilot, and we’ve been able to expand our business. Since his training and certification, we not only offer surveying services on land and water but also from the air.”

提取地点的空中调查，包括其人造湖泊，以及使用特殊调查船对水的同时进行水文调查提出了特定的挑战。对于这个特定的项目至关重要，必须精确协调这两个任务，以便为Kobel-Bau提供准确的信息。

Flying high, measuring low

为了为最有效的可交付方式创建通用数据集，必须链接各种调查方法，这需要技术解决方案和飞行员的专业知识来生成可靠的数据。为了获得这一点，该公司使用特殊开发的飞行计划软件设计了一个精确的飞行计划。使用概述地图，Waypoint飞行计划促进了自主进行空中调查的精确计划。

“The open interface of the workflow provides us with top quality data with virtually no loss,” said Schwall. “We could then easily combine the aerial and hydrography data seamlessly for one valuable deliverable.”

在确定高度可见且合适的地面点以供数据进行地理作用后进行空中调查。每次飞行后能够立即查看生成的数据（用高分辨率紧凑型相机拍摄的图片）的能力，调查质量得到了迅速验证。相机固定在飞行多传感器平台的自由浮动阳性上，使飞行员和其他人在无人机在地面上后立即审查了摄影材料。在航路点飞行期间自动添加图像，并用无人机生成的GPS坐标标记。

计算表明该项目需要持续六分钟的五个航班才能覆盖55公顷的区域。这种地形的飞行高度在90米处建立。由于调查当天该地区的风条件，飞行员决定进行七个单独的航班。作为负责的无人机所有者，Ingenieurteam Geo在最大风速为6 m/s的条件下飞行了无人机，以确保安全。

无故障，所有收集的数据都可以组合成形成高度精确的模型。通过Leica Geosystems总站进行调查的地区以及测量船的声纳结果，与无人亚博5分钟快三机的正交照片无缝合并。

Combined with the results from the hydrography survey, IngenieurTeam GEO was able to provide a complete overview of the site and the current situation, which Knobel-Bau used to further its business.

“从空中，地面和测量船上的调查数据结合起来，导致了极好的结果。Orthophoto，砾石坑的确切体积计算和3D模型允许对实际情况进行准确的计划和准确的评估。” Knobel-Bau董事总经理Michael Knobel说。与所有常规和传统方法相比，大型项目的经济实施和Ingenieurteam Geo的相关结果是决定性的。”

潜力越来越大

After more than 45 aerial projects and about 350 individual flights, IngenieurTeam GEO continues to be impressed by the data accuracy of Leica Geosystems UAV while seeing nothing but positive ROI on its investment.

Schwall说：“使用Leica Geosystems无人机进行航空数据生成，使我们已经可以减少整个几天甚至几分钟的户外过程。”“我们认为不同的Leica Geosystems技术与软件和调查工具之间的相互作用是与经典测量方法和市售照片无人机的关键差异。这个组合使我们可以轻松地生成数据并为客户提供基本信息。”