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Platforms

Flexible in the air

The right platform is selected based on project size and requirements.

Geotrend survey drone in flight

Drones

Our own drone fleet covers a wide range of applications. From compact drones for inspections to large multicopters for large-area capture. We fly in the 'Specific' category, based on our own risk assessment (SORA) and the corresponding operational authorisation from the Swiss FOCA (BAZL). This also allows us to carry out demanding missions, legally compliant and insured.

Survey flight from the helicopter overlooking the landscape

Helicopter

For large areas and high demands on data variety, we deploy the helicopter. Our system can be mounted on various helicopters and combines high-resolution aerial cameras with a LiDAR scanner. Our own flight planning software lets us fly highly efficiently in any area.

View from the cockpit during a survey flight over a lake and village

Aeroplanes

Strong partnerships allow us to use aeroplanes in various classes. This lets us capture even very large areas efficiently and in a short time.

Sensors

The right tools

High-quality sensors provide the raw data from which precise geodata products are created.

Phase One medium-format camera in its mount

Phase One Cameras

Medium format cameras from Phase One with geometrically excellent optics and a global shutter. The entire sensor area is exposed at the same time, as with a leaf shutter. The faster shutter speeds keep the image free of motion blur even at high flight speeds. High resolution and dynamic range deliver precise orthophotos and textured 3D models, even in difficult lighting conditions.

RIEGL laser scanner mounted on the helicopter in operation

RIEGL LiDAR

Laser scanners from RIEGL capture the ground even under vegetation. Where individual laser pulses find their way between leaves and branches, a terrain model is created where photogrammetry only sees the canopy. That is the basis for volume calculations and planning. Thin structures such as power pylons, cables and rails are also reliably captured. The dense point clouds are moreover suited to engineering surveying, up to the digitisation of buildings.

Multispectral false-colour image of an area

Multispectral Sensors

Multispectral cameras also capture light outside the visible range, in particular in the near infrared. Healthy vegetation reflects far more strongly there than stressed vegetation, long before anything is visible on the leaf itself. From this, vegetation indices can be calculated and stress zones mapped across whole areas. Repeat flights make changes over time measurable, in agriculture as well as in forestry and environmental monitoring.

Aerial thermal image of a building

Thermal Cameras

Thermal imaging cameras record surface temperature and reveal differences that remain hidden from the eye. On buildings they show thermal bridges and leaks, on solar installations defective modules, on utility networks escaping heat. Flown over large areas they produce temperature maps of entire neighbourhoods, which make heat islands in built-up areas visible and serve as a basis for urban planning and climate adaptation.

Processing

In-house software and workflows

Developed and refined over many years. Our processing pipeline delivers consistent, reproducible results.

Photogrammetric processing of a built-up area

Photogrammetry

Overlapping aerial images produce three-dimensional models, orthophotos and point clouds. Custom software and automation accelerate processing and ensure consistent quality, even on projects with tens of thousands of images. Our own aerotriangulation workflow achieves extremely high accuracy.

Classified point cloud with colour-coded object classes

Point Cloud Classification

Every point is assigned to a class, for example ground, vegetation, buildings, water, bridges or power lines. Each class can be analysed on its own. This produces clean bare-earth terrain models, building models, forestry and vegetation analyses or clearance checks along power and rail corridors. Because the data can be compared over time, changes are reliably detected too.

Textured 3D model of a building complex

3D Modelling

The imagery yields textured meshes, Gaussian splats and digital twins that represent the captured state in full. On request we additionally derive generalised models from them, in which surfaces, edges and building elements are available as clean CAD geometry. All results can be exported in common formats and used in CAD, GIS and web viewers.

Measuring a ground control point in the field with a GNSS receiver

Quality Assurance

Quality assurance begins before the flight. With our own mission planning software we set ground resolution, overlap and flight pattern so that the required accuracy is achievable, rather than checking it only afterwards. Wherever possible we survey additional ground control points and compare them against the finished data. A detailed accuracy report documents the precision achieved.

Questions about our technology?

We are happy to discuss which sensors and workflows best fit your project.