Aerial capture
UAV & Aerial Survey
UAV photogrammetry and drone mapping that turn flight lines into orthomosaics, terrain models and aerial imagery.
Service scope
- UAV Photogrammetry
- Drone Mapping & Orthomosaics
- UAV LiDAR
Overview
UAV surveying covers a site from the air rather than on foot, under the same survey discipline. SEC plans each mission around ground control, flies to a defined capture specification, and processes the imagery into georeferenced products, within the scope agreed for the project.
Applications
Large-area topographic mapping
Orthomosaics and surface models over sites impractical to walk.
Corridor & route surveys
Pipelines, roads and transmission corridors captured in continuous strips.
Earthworks & stockpile monitoring
Repeatable flights for progress surfaces and volume comparison.
Site documentation & inspection
Visual records of assets and construction state.
SEC Capability
Flights tied to ground control
Missions are flown against control points observed with GNSS for the project.
Mission engineering
Flight height, overlap and sensor choice designed from the required output, backwards.
Rigorous photogrammetric QA
Checkpoint validation and documented residuals.
Workflow & Methodology
- 01Mission planning & permitsCapture specification, flight plan and site clearances.
- 02Ground controlControl and checkpoints observed before the first flight.
- 03Flight operationsSystematic acquisition flown to the plan, logged and verified.
- 04Photogrammetric processingTriangulation, surface generation and orthomosaic production with QA.
- 05Deliverable preparationProducts issued in GIS- and CAD-ready formats.
Equipment
DJI
DJI Matrice 300 RTK
A UAV platform of the type used to carry survey and inspection payloads, within the scope agreed for the project.
DJI
DJI Zenmuse L2
A LiDAR payload flown on a UAV platform to record ground and surface geometry as point measurements.
Deliverables
- Orthomosaic imagery
- Digital surface and terrain models
- Contours and planimetric mapping
- Volume and progress reports