The Preliminary Survey

A classic task for surveyors is establishing the situation as-is. In some sectors, this task has been revolutionised by the aid of UAVs and digital cameras. The bird’s eye view permits the quick, precise and complete capture of all visible elements of the measured area, with correct heights and orientation. Resurveying for forgotten or later assigned elements becomes redundant, as a 3D likeness of reality has already been created.

In many of the following examples we will constantly arrive at the conclusion: Why send a human into danger when a UAV flyover can cover all bases?

Capturing the Terrain

With a UAV, it is no longer necessary to go to thousands of points to take measurements. A few waypoints and a couple of hours are enough to accurately carry out a GNSS survey of an open landscape of up to 100 hectares.

Overall, we have focused our efforts on flights over areas whose photographic and aeronautical demands are simply too high for toy drones, yet for which hiring a helicopter would be too costly.

We are specialists in flight planning over steep terrain and have a great deal of experience in mountain ranges. We have also taken on significant challenges in flight planning and operation, such as the creation of orthophotos with a geometric resolution of one millimetre per pixel.

These references can be found in the appropriate sections: “Ski Resorts” and “Geology”!
 

Corridor Mapping

Difficult-to-reach positions along roads, unreachable utility lines, steep pressure pipelines or river sections… The most challenging and perilous tasks of surveying. We take care of it from a safe distance and send our copter into action!

Rooftop Areas

For both urban locations and the project planning of renovations and restorations, it is necessary to be familiar with the rooftop landscape. Some minutes of flight, a few ground control points and our own knowhow are all that’s needed to safely and precisely survey these otherwise complicated constructions.

Measuring Volumes

For smaller areas, it is often time that factors into choosing a UAV flyover. For larger areas, this challenge is joined by a need for true-to-life detail from the photogrammetric flight. Measuring the volume of a reference area is possible with the insertion of special programmes within the point cloud.

Uses in the field include quarries, woodchip piles from district heating plants, describing the contents of empty dammed lakes, and gauging the level of sediment in the equalizing basin of hydroelectric plants.

Agricultural Areas

As a basis for project planning, but even for calls for tender and machine-control, it is crucial to establish the as-is situation. With this, you can study variants, determine dimensions and automate work processes.