Centimetre RTK/PPK Aerial Surveying

Aerial Drone Surveying & Photogrammetry Services

Acquire survey-grade aerial topography and ultra-high-resolution orthomosaics. TerraX3D deploys RTK/PPK-guided commercial drone fleets across South Africa, transforming hundreds of hectares of terrain into classified CAD elevation models, contour maps, and digital twins in record time.

Book Drone Survey Explore Solutions
Drone aerial survey topographical mapping flight
< 1.5cm Pixel Resolution (GSD)
RTK/PPK Survey Control Precision
500+ Ha Single-Day Capacity
Lo Grid Hartebeesthoek94

High-Density Aerial Geomatics

Georeferenced Orthomosaics & Topography

From greenfield civil development sites to agricultural estate boundaries and linear pipeline corridors, our drone surveying workflows deliver complete spatial clarity without disrupting live ground operations.

High-Res 2D Orthomosaics

Thousands of high-resolution aerial images stitched into a seamless, distortion-free, georeferenced aerial basemap at sub-2cm resolution.

  • Site progress tracking & auditing
  • GIS asset layers & boundary mapping

Digital Elevation & Contours

Generate digital terrain models (DTM), bare-earth surfaces, and vector elevation contours at 0.25m, 0.5m, or 1m intervals for civil design.

  • AutoCAD & Civil 3D DXF contours
  • Stormwater flow & catchment analysis

3D Photogrammetry Meshes

Textured, photorealistic 3D reality meshes of architectural structures, bridges, heritage monuments, and open-cast pits for BIM visualization.

  • OBJ, FBX, 3D PDF, & Cesium 3D Tiles
  • Virtual site walkthroughs & VR models

Deliverables & Coordinate Standards

Export formats ready for instant import into CAD, GIS, and Engineering software.

Deliverable Format / Specification Accuracy / System
Georeferenced Orthomosaic GeoTIFF, ECW, JPG2000 < 2cm GSD / Hartebeesthoek94 Lo Grid
Digital Elevation Model (DEM/DTM) 32-bit GeoTIFF, XYZ Grid 1-3cm vertical absolute accuracy
CAD Topographic Vector Contours DWG, DXF, SHP (0.25m / 0.5m / 1m) AutoCAD Civil 3D, MicroStation ready
3D Point Cloud LAS, LAZ, E57 (RGB Colourized) 100-300 pts/m² density
Frequently Asked Questions

Photogrammetry & Drone Survey FAQ

Our high-resolution calibrated metric camera sensors achieve sub-1.5cm Ground Sampling Distance (GSD) per pixel, allowing fine structural and topographic detail capture.
Photogrammetry builds 3D models and orthomosaics from high-resolution overlapping photographs, perfect for open ground and visual inspections. LiDAR utilizes pulsed lasers capable of penetrating dense tree canopies.
Yes. All drone surveys are geo-referenced using RTK/PPK base station networks and calibrated ground control points (GCPs) tied to official Hartebeesthoek94 Lo meridian grids.
We deliver full georeferenced GeoTIFF orthomosaics, 3D point clouds (LAS/LAZ), DXF/DWG vector contours, and 3D surface meshes (OBJ/FBX) compatible with Civil 3D, ArcGIS, and QGIS.

Ready for Precision Aerial Site Mapping?

Contact our UAV geomatics flight team today for high-resolution aerial photogrammetry and topographic surveying anywhere in South Africa.

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