UAV AERIAL SURVEYS FOR COMMERCIAL PROJECTS

Photogrammetry is a surveying and mapping technique, which is used in many applications in the surveying industry such as topographic mapping, site planning, determining earthworks volumes, production of digital elevation models (DEM) and geo-referenced orthographic maps. An ortho-rectified aerial image can be used to determine accurate measurements, after having been adjusted for topographic relief, lens distortion, and camera tilt.

Drones provide quick deployment and turn-around times with accurate reporting from point cloud datasets. Survey ground control, processing, and reporting is carried out by our experienced and registered surveyors.

STOCKPILE SURVEYS

Surveying a stockpile using a drone is becoming simpler, faster, and safer than the traditional survey methods. Surveying from an aerial perspective overcomes the problem of stockpile height, steep slopes and the potential risk to a surveyor on foot. The speed and precision of using a drone means that surveys can be undertaken more regularly and with greater accuracy than ever before, especially when considering medium to large-scale stockpiles.

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     Services Delivered

    • Ad-hoc stockpile measurements and volumetric reporting
    • Periodic stockpile audit measurements and volumetric reporting for mines
    • Accurate ortho-mosaic images/maps to visualise and verify stock on hand

    TOPOGRAPHIC SURVEYS

    Uneven terrain can cause difficult and hazard working conditions for surveyors travelling over land on foot. Drones are able retrieve topographical maps of large areas with minimal wear and tear on equipment. They save time and money, with quick deployment and turn-around times resulting in precise and accurate data and ortho-rectified imagery.

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    Services Delivered

    • Predesign surveys
    • Detailed surveys of existing infrastructure and topography
    • Digital Surface Models (DSM) & Digital Terrain Models (DTM).  Scope for DTM is limited to areas with sparse vegetation
    • Contour maps
    • Accurate ortho-rectified imagery/maps
    • Geo-referenced High Resolution Orthophotos up to 1cm GSD


    AS BUILT SURVEYS

    Accurate and detailed as-built drawings are essential to the success of modern day construction projects. Drones can survey areas of interest to offer superior, speedy, and accurate surveys/models. 

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      Services Delivered

      • Cost-effective as-built surveys for the quick collection of data for generation of 3D models=  
      • Data acquisition for GIS applications
      • Point cloud data acquisition of existing infrastructure for planning
      • Accurate geo referenced Ortho-rectified imagery for generating CAD line drawings
      • High-Resolution Google Earth overlays

      STRIP SURVEYS

      Aerial drones can efficiently survey corridors – ie pipelines, roads, and servitudes with quick turnaround times to create accurate surveys/models

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      Services Delivered

      • Mapping of small to medium scale areas
      • Accurate Digital Surface Models (DSM) & Digital Terrain Models (DTM) -Scope for DTM is limited to areas with sparse vegetation
      • Contour generation
      • Geo-referenced, High Resolution Ortho-rectified imagery with up to 1cm GSD

      DRAINAGE DESIGN

      The data collected from drones can be used for drainage design plans for development sites. Data can also be used determine the best route for water to flow across a selected area.  

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      Services Delivered

      • High-density point cloud data for analysing terrain/ flow patterns

      PORTABLE INTEGRATED MULTI-BEAM SURVEYS

      The HydroLite-MB Multi-beam is a portable, bathymetric, dual frequency survey system. It has been designed as a turnkey, shallow water multi-beam rig, pre-installed and pre-calibrated on its mounting frame.

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      Services Offered:

      • Shallow water multi-beam surveys
      • Depth sounding - Sound velocity profiler 
      • Ultra-high resolution sonar
      • Side scan imagery
      • Identification of critical and dangerous objects on the harbour bed

      SINGLE BEAM BATHOMETRIC SURVEYS

      This consists of an automatic bathometric drone catamaran capable of providing aquatic surveying.

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      Services Delivered:

      • Monitoring of various marine sites
      • Sub-surface Digital Terrain Models (DTMs)

      GROUND PENETRATING RADAR

      Ground-penetrating radar (GPR) is a geophysical method that uses radar pulses to image the subsurface. This non-destructive method uses electromagnetic radiation in the microwave band (UHF/VHF frequencies) of the radio spectrum, and detects the reflected signals from subsurface structures. GPR can have applications in a variety of media, including rock, soil, ice, fresh water, pavements and structures. 

      The non-destructive methods of ground-penetrating radar is fast becoming a viable technology worldwide for surveying subsurface features and defects in flexible and rigid pavements

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      Services Delivered

      • Detection and mapping of utility lines such as water pipes, storm water pipes, sewer pipes, and cables/cable conduits
      • Detection and mapping of subsurface features
      • Archaeological applications