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Unmanned Aerial Solutions
Simon Spratley
Anything is Possible
ATEC-3D Mission Statement
ATEC-3D LTD will deliver the highest level of service to clients with the use of Unmanned Aerial Vehicles.
It aims to provide a highly mobile and rapid deployment to collect and deliver surface data for almost any purpose including but not limited to high definition photography, precision aerial surveys including detailed volumetric surveys, 3D digital modelling, and site monitoring and environmental services.
Such services providing near real time accurate data reduces operating risk and cost, especially associated with volume contract measurement and payments
All of our UAV operators are authorised by the UK Civil Aviation Authority (CAA) to conduct aerial work safely and responsibly. ATEC-3D is based in the UK, operates internationally and can assist clients deliver better project management outcomes through safe, cost effective site data acquisition at short notice
ATEC-3D Target Operations
Some operations need bigger systems for comprehensive surveys…
• But continuous measurements over smaller areas will keep the mine database current.
• Speed of mobilisation can provide detailed cover of an area in a hurry• Changes in any dynamic operation, pits, dumps, vegetation cover, water
courses and levels, can be monitored and measured.• Rotary wing UAV’s can examine places personnel cannot or should not go.• ATEC-3D can formulate a supply and training package to expand in-house
survey capability and assist with independent QAQC of program.• Base Line Maps and data for the entire project to help with delay analysis
and disputes.
Common Systems
Fixed wing
Multi Rotor
• Aerial surveying - mapping• Large area coverage• Accurate ground data collection• Digital Modelling • Measurements• Visual inspections • Planning
• Aerial structural surveying• High resolution images• First person view• Aerial Photography• Aerial Videography• Instant results
Target Areas
Mine Dumps, Open Pit Slopes and Tailings Dams all have different challenges in gathering detailed surface data for monitoring.• UAV’s can provide cost effective
periodic surveys or support in designing dedicated systems
Photographic overlay of 75% minimum Point cloud created for each image containing +300K points
Post flight processing to combine imagery +/- 1Km2 compilation in 1 flight
Fixed wing system
Laser generates point cloud
Accuracy (cm)
Vertical Horizontal
Lidar 15 (SE at 1 ∑) 1
UAS 2.5* 2.5
Satellite 250-500 250-500
Manned Survey <1 <1
*Hight and Ground state dependent
Our system is aimed at users needing extremely accurate and fast results. The point cloud density and accuracy is comparable to LiDAR results.
ATEC-3D includes Ground Control Points (GCPs) in client specific coordinate system, which results in higher accuracies.
A detailed flight quality and processing accuracy report is generated
Using an optimized hardware setup, it takes from 2 hours to generate the Orthophotograph and Digital Surface Model (DSM) on an area of between 0.5-1km2
Fixed Wing Case Studies
The Environmental Agency required a high accuracy data set including volume calculations and 3d model for the design and replenishment of 3.5km of the Kent coast line.
Beach Replenishment – Environment Agency
Flights Completed lawfully in a restricted ATC Zone with constant contact with local air traffic control Incorporating ground control points and quality control
• Completed digitisation of the beach• Created 100m chainage and beach profiles• Fill Volumes calculated for the different design options• Saving of over 50% from a conventional survey• QAQC of the data shows a standard deviation of XY <20mm Z<25mm
Quarry Survey – Walter Energy
We were tasked to survey a quarry in Wales and calculate the volumes of the various stockpiles. Several flights were completed over the operating quarry at a height of 86 and 123m to cover the 10Ha site. The 86m flight was conducted to generate a high density point cloud and 123m to generate a high quality ortho-mosaic photograph
Visibility was good throughout the day. There was 100% cloud cover which turned to light rain at several intervals but did not affect the progress of the survey
• Digitisation of each stockpile completed.
• Volume calculations completed for all 21 stockpiles.
• Incorporation and re digitisation of base map supplied by client.
Topographic Survey – Tristar Resources, Canada
• 10km2 site flown for high resolution mapping and environmental purposes
• Identification of hydrology
• New drill sights mapped
• Trench data incorporated
• New geological outcrop identified
Topographic Survey – J.C White Geomatics
• Complete series of flights completed over operating Quarry at a height of 90m to cover a 0.5km2 area
• Ground Control points Incorporated to geo-rectify data
• Producing 3D PDF and DXF output for the client
• Accuracies XY <20mm Z <50mm
Rockmate and ATEC-3D are developing an optimisation program for quarries and the mining industry to increase capabilities and reduce costs.
Blast Management Software – Rockmate
ATEC-3D flew the face of an active quarry. We inputted the photographic data in to the Rockmate software which highlights areas flying rock are likely.
The site was then mapped with the fixed wing to give a time space data set for further analysis.
Green, 515.520-590.600 nm, is used for imaging vegetation and deep-water structures, up to 90 feet (30 m) in clear water.
Red, 600.630-680.690 nm, is used for imaging man-made objects, in water up to 30 feet (9 m) deep, soil, and vegetation.
Near infrared (NIR), 750-900 nm, is used primarily for imaging vegetation.
Because the red and near-infrared regions are adjacent (red is approximately between 600 and 700 nm and near-infrared begins at around 700 and stretches to about 1200 nm), the low vegetation reflectance in the red regions is immediately followed by a sharp increase to the high reflectance in the near-infrared. This steep increase in reflectance in the 690-730 nm region is known as the red edge.
Red-Edge NVDI
normalized difference vegetation index (NDVI)
