Related Projects

Drone / UAV Surveys

• Aerial Inspection (Photography & 4K Video)
  • General hi-res photography of buildings / structures / site for condition or dilapidation surveys
• 3D Mapping (Photography & LiDAR)
  • 80% overlapping photography and Ground Control Points (GCPs) for accurate site data capture to produce;
    • 3D Photogrammetric Models
    • 3D Point Clouds
    • Georeferenced Ortho Images
    • Volumes Calculations
• Contaminated Land Surveys
  • Surveys of sites that are inaccessible by foot
• Ground Control Points (GCP’s)
  • Installation of GCP’s for larger mapping exercises
• Truth Patches
  • Truth patches for larger mapping exercises
• Thermal Imaging

Drone technology has advanced significantly in recent years, utilising survey-grade drones equipped with RTK GPS and high-end cameras for precise 3D mapping via photogrammetry.

Sigma Surveys utilise the following drone, camera and mapping software.

• DJI Matrice M350 RTK drone with Zenmuse P1 camera for centimetre-level accuracy and metadata capture.
• Zenmuse P1 camera featuring a 45MP full-frame sensor for both photography, mapping and inspection.
• DJI Matrice M350 RTK compatible with Thermal Imaging using the H20T camera and LiDAR sensors like the DJI Zenmuse L2 or Emesent Hovermap ST-X.
• A range of software options, including Pix4D, Drone Deploy, Reality Capture, and DJI Terra, tailored to client requirements.
• Hosting 3D models on Nira, allowing clients to view them via a URL.
• Drone Deploy provides powerful cloud-based tools for end-user customisation.