How often do unexpected site discrepancies delay your project schedule? Drone-based photogrammetry delivers precise 2D and 3D geospatial data in a fraction of the time of traditional site surveys.
At Longitud, we capture highly accurate visual data to improve your planning, monitoring, and reporting processes. From initial earthworks to final handover, our digital workflows help you keep projects on schedule, within budget, and fully documented.
How Drone Photogrammetry Optimizes Construction Workflows
By utilizing advanced unmanned aerial vehicles (UAVs), we execute routine drone mapping flights to capture high-resolution imagery of your site. Specialized photogrammetry software then processes and stitches these overlapping images to generate detailed UAV photogrammetry services datasets.
This modern surveying methodology integrates seamlessly into all stages of demanding projects, supporting:
- Infrastructure & Transportation: We deliver precise track geometry recording and inventory documentation for complex railway surveys as well as major road corridors.
- Residential & Commercial Developments: Our team provides complete staking, design mapping, and utility coordination from day one.
- Industrial Facilities: We map complicated structural layouts and surrounding terrain with minimal on-site disruption.
Transforming Site Monitoring and Progress Tracking
Keeping stakeholders aligned across a multi-year project is a common logistical challenge. Drone-driven construction monitoring captures repeating site conditions from consistent, repeatable flight paths.
Side-by-Side Progress Tracking
By turning repetitive site captures into time-stamped datasets, we generate high-resolution orthomosaics and 3D models organized along a clear project timeline. This enables project managers to perform side-by-side comparisons of site conditions across different dates, ensuring clear proof of work-in-place.
Accurate Volume Calculations
You can track earthworks progress by comparing current site elevation models with previous baselines. This rapid data collection allows your team to calculate stockpile volumes and monitor excavation progress without sending surveyors into active, hazardous zones.
Seamless BIM Collaboration
We convert captured visual data into highly detailed point clouds and textured meshes. This information feeds directly into BIM-ready workflows, allowing virtual design coordinators and engineers to compare actual as-built conditions against design models.
Achieving Sub-Centimeter Accuracy in the Field
Site mapping data is only as good as its underlying accuracy. Without ground control points (GCPs) or specialized hardware, horizontal drone mapping accuracy typically lands between 1 to 3 times the ground sampling distance (GSD).
For demanding Scandinavian construction environments where centimeter-level precision is non-negotiable, we deploy RTK-enabled drones and establish a rigorous network of physical ground control targets before flight operations begin.
Integrating GCPs and RTK data delivers:
- Sub-centimeter horizontal accuracy on open terrain.
- Highly reliable relative accuracy of 1–2× GSD horizontally and 1–3× GSD vertically.
- Georeferenced datasets that align perfectly with your existing topographic surveys and spatial coordinate systems.
Every dataset we capture undergoes strict quality control measurements to ensure it provides a reliable foundation for subsequent construction surveys.
EASA Compliance and Scandinavian Drone Operations
Operating drones on active building sites in Sweden, Norway, and Denmark requires strict compliance with civil aviation authority regulations. Since Regulation (EU) 2019/947 and Regulation (EU) 2019/945 govern drone operations across the EU and EEA, the exact same core legal framework applies across Scandinavia.
Because construction mapping typically occurs near built-up areas, industrial facilities, or transportation networks, most flights fall under the Specific category of risk. Managing these flights legally and safely requires:
- Specific Operations Risk Assessments (SORA) to evaluate and mitigate ground and air risks.
- Operational Authorization from local civil aviation authorities such as Transportstyrelsen in Sweden or Luftfartstilsynet in Norway.
- Geofencing Compliance, which demands careful planning and authorization when working inside restricted airspaces near major airports or military zones.
Longitud handles this entire regulatory and risk assessment process internally, ensuring every flight over your site is fully compliant and safe.
Integrated Reality Capture Solutions
While aerial photogrammetry provides unmatched coverage for large-scale site planning, complex structures often require a hybrid approach. For detailed indoor spaces, intricate facades, or dense industrial installations, we combine drone mapping with ground-based 3D laser scanning.
Merging these complementary technologies gives you a highly accurate, comprehensive digital twin of your asset. You can explore our portfolio of completed projects to see how we apply these combined surveying methodologies to provide better project control for builders across Scandinavia.
To optimize your next project with survey-grade maps, faster volume calculations, and flawless progress tracking, explore our full suite of surveying services or contact our team of geodata experts today to request a custom quote for your site.