Planning
Urban planning documents
Up-to-date base mapping and DTM for drafting or reviewing planning documents and calculating gradients and levels.
Sector · Urban planning and land
Centimetre-accurate models for land and planning work.
Photogrammetric and LIDAR drone flights covering up to 600 ha a day, producing DTM, DSM and orthophotos ready for planning documents, flood studies and territorial analysis in GIS software.
600 ha/dayCoverage per photogrammetric or LIDAR flight
cmCentimetre accuracy with RTK/GCP support
DTM/DSMDigital terrain and surface models
GISCompatible with ArcGIS and QGIS
From the flight to territorial data.
One photogrammetric or LIDAR flight feeds several uses: drafting planning documents, modelling floods, or keeping the mapping of an area up to date.
Hydrology
Flood studies
Centimetre-accurate DTM as the basis of hydraulic and hydrological models delimiting flood zones.
GIS analysis
Land management
Orthophoto and models integrated into GIS software for inventory, analysis and territorial decision-making.
DTM, DSM and orthophoto: what each one is.
All three come from the same flight, by classifying the captured point cloud to separate ground, vegetation and buildings.
DTM
Digital Terrain Model: the bare ground surface, without vegetation or buildings. The base for gradients, levels and hydraulic models.
DSM
Digital Surface Model: includes vegetation, buildings and everything standing on the ground. Useful for visibility, shading and volumetric analysis.
Orthophoto
Geometrically corrected aerial image, with metric accuracy so distances and areas can be measured directly on it in GIS.
Photogrammetry or LIDAR, depending on the ground.
Drone photogrammetry covers large areas with maximum visual detail; drone LIDAR measures with an active laser and penetrates dense vegetation, where photogrammetry loses accuracy.
Questions about urban planning and land.
What is a DTM and what is it used for in planning?
A DTM (Digital Terrain Model) represents the bare ground surface, without vegetation or buildings. It is the usual base for drafting or reviewing planning documents, calculating gradients, setting levels and feeding hydraulic and hydrological models.
What is the difference between a DTM and a DSM?
A DTM models bare ground only; a DSM (Digital Surface Model) also includes vegetation, buildings and everything standing on the ground. Both are derived from the same drone-captured point cloud, by classifying which points belong to the ground and which do not.
How much ground can be covered in a day of flying?
Up to 600 ha a day with a photogrammetric or LIDAR drone flight, depending on terrain, vegetation cover and the resolution required. It is the fastest way to cover a whole municipality or a large planning area.
Which GIS software do you work with?
We deliver in ArcGIS- and QGIS-compatible formats (SHP, GeoTIFF, GeoJSON), plus access to the project web viewer for consulting the orthophoto and the models without installing anything.
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