基于无人机的Porgera矿山地图

巴布亚新几内亚是地球上最乡村和未开发的地方之一，它以其密集的雨林，沼泽，陡峭的山谷和高达4,500米的山脉挑战测量师，以寻找新的方法来创建准确的测量方法。为了无视这些困难，专家被迫寻找新的创新解决方案，以获得精确的结果，并在使用无人机（UAV）方面找到了完美的匹配。

When Benchmark Survey & Design, experts specialised in topographic site surveying from North Queensland, Australia, were contracted by the Porgera Mine Survey Team to map spill grounds around the secluded mine located at the head of the Porgera Valley in highlands at an altitude of 2,200 to 2,700 m, they needed to find a new method of surveying. As the captured data would be used for environmental monitoring of the dump sites generated by the mine, accuracy was of the utmost importance.

用无人机绘制危险的地形

在一个地方山体滑坡和地震是有限公司mmon and with only five days available to map, Benchmark Survey & Design determined a survey by air would be the safest and most efficient way to collect the needed data. As the firm needed more experience in using Leica Geosystems UAV, it turned to Spatial Technologies, an Australian firm with more than 20 years in geographic information systems (GIS), to provide an UAV pilot. Flying Leica Geosystems UAV and collecting data in various environments for the past two years, Spatial Technologies was up for the challenge.

With two sites to capture around the mine, Anjolek at 380 Hectares and Anawe at 250 ha, the pilot, Anton van Wyk, had to carefully plan his route in the flight planning software. Facing several challenges, like steep and unattainable terrain only accessible by helicopter, use of the helicopter only available one out of the five days to map, and extreme weather with heavy fog in the mornings and continuous rainfalls in the afternoon, reduced the time bucket to only a few hours each day to survey. Anton’s precise plan rested upon the durability and dependability of Leica Geosystems UAV solution.

“Leica Geosystems UAV provided better results than what Porgera Mine Survey Team expected, even in such rough terrain,” said Wayne Storey from Benchmark Survey & Design. “Though the mine survey team had someone prior fly this mission, the team didn’t receive the expert mapping and processing of the data the UAV delivered with its more advanced sensors.”

每次约10分钟的总飞行总数为32个，空间技术在5 cm的接地采样距离处收集了9,100个正射。尽管基准测量与设计仅需要该项目的子量表精度，但空间技术实际上可以通过与无人机上的RTK结合使用策略性放置的控件来提供10-20厘米的精度。整个项目在大约96小时内进行了处理，以提供溢出场中体积变化的视觉文档。

More than just volumes

将Leica Geosystems无人机的正射原样与激光扫描技术创建的网站的旧数据和点云相结合，该项目中的工程师和环保主义者可以超越量计算。与收集的多种形式的数据一起，他们现在可以看到可见的植被变化证明并进行斜坡分析。

As the dangerous terrain evokes dangerous conditions for surveyors, measurements were previously being taken few and far in between. With the safer and quicker UAV survey, the mine survey team can now monitor on a more regular basis to manage issues sooner and rectify problems before they become major concerns.

“Aerial surveys with an UAV can not only be done quicker than with traditional methods, but with the advanced sensors it can carry, we can gain the same if not better accuracy, as well, “said van Wyk. “Since surveyors don’t have to enter risky areas, too, to set up instruments, the UAV also makes our jobs safer.”

当地形在地面上造成障碍时，无人机就能从上方克服。Leica Geosystems无人机解决方案开放越来越多的领域，正在在全球创造新的机会。