uavs and close range photogrammetrygis.unbc.ca/wp-content/uploads/2013/05/uav-tennant-457.pdf ·...

UAVs and Close Range Photogrammetry

GEOG457/657 Advanced Remote Sensing

Christina Tennant J.R. Canadian Mapping Ltd.

www.jrcanmap.com

J.R. Canadian Mapping Ltd.

#314 1717 3rd Ave

Prince George, BC, V2L 3G7

250-561-2455

http://www.jrcanmap.com/

X8 Fixed Wing

Built and maintained by JRCanMap using off-the- shelf components

• Material: EPO foam

• Wingspan: 2.1 m

• Weight: 5 kg

• Power: LiPo Battery

• Flight Time: 90 min

• Pre-programed on the ground and capable of fully autonomous flight from launch thru to landing

• Can capture roughly 1000ha at 10cm pixel resolution, or…

…50ha at 1cm pixel resolution in a single flight

• RGB and Multispectral (RG + NIR) cameras

An Unmanned Aerial Vehicle (UAV) is “a power driven aircraft, other than a model aircraft, that is operated without a flight crew member on board.”

“…are operated by research institutions and other organizations for non-recreational purposes.”

-Section 101.01 of the Canadian Aviation Regulations (CARs)

Types of UAVs

Types of UAVs

Vertical Take-Off and Landing (VTOL)

Fixed Wing

Types of UAVs

VTOL Fixed Wing

Speed Slow Fast

Range Short Long

Take-Off/Landing Area

Small Large

Turning Distance None Long

Flight Direction Any Forward

Mechanical System Complex Simple

Sensors DSLR Camera Thermal

LiDAR Others (e.g. Multispectral)

Transport Canada Regulations

• Unaided Visual Line of Sight (LOS)



• Ground School Training




• Insurance




• Insurance

• Relevant Acts, Regulations, or Laws

• The Charter of Rights and Freedoms,

• Criminal Code of Canada;

• Privacy Act;

• Personal Information Protection and Electronic Documents Act;

• Customs Act;

• Trespass Act;

• Radiocommunication Act;

• Environmental Protection Act;

• National Parks Aircraft Access Regulations;

• Transportation of Dangerous Goods Act; and

• Canadian Transportation Accident Investigation and Safety Board Act.


30 m (or more) away from people, animals, buildings, structures, and vehicles not involved in the operation




• Insurance

• Relevant Acts, Regulations, or Laws

• 30 m (or more) from people/ buildings

• 9 km from airports/forest fires

Resources

• Transport Canada – http://www.tc.gc.ca/eng/civilaviation/standards/gene

ral-recavi-uav-2265.htm

• Unmanned Systems Canada – http://www.unmannedsystems.ca/

• Canadian Centre for Unmanned Vehicle Systems – http://www.ccuvs.com/

• DIY Drones – http://diydrones.com/

http://www.tc.gc.ca/eng/civilaviation/standards/general-recavi-uav-2265.htm








http://www.unmannedsystems.ca/

http://www.ccuvs.com/

http://diydrones.com/

Considerations

• Access

• Terrain

• Slope

3cm

3cm

12cm

12cm

Considerations

• Access

• Terrain

• Slope

• Land Cover

Considerations

• Access

• Terrain

• Slope

• Land Cover

• Weather

• Only What Can be Seen in the Photos

UAV >70% Overlap

UAV >60% Overlap

Post Processing

10% UAV Data Collection, 90% Post Processing

• Photogrammetric stereo workstations

• Advanced in-house and commercial photogrammetric and surveying software

• Experience with the software and associated workflows

Software

• Pix4D

• Agisoft

• Menci

• AreoHawk

• SimActive

• EnsoMosaic UAV

• Triangulate images

• Point Cloud

• DSM

• Ortho

• No automated DEM unless bare earth

• LiDAR software to

process point clouds

Image Matching

Exterior Orientation

Photo Easting Northing Altitude Kappa Phi Omega

DSC06842.JPG 495137 6020698 985.198 111.080 5.316 0.871

DSC06843.JPG 495110 6020691 986.453 114.967 1.418 -4.688

DSC06844.JPG 495083 6020682 987.632 114.053 1.587 -6.506

DSC06845.JPG 495055 6020674 988.814 113.321 1.707 -3.920

DSC06846.JPG 495028 6020666 989.975 112.620 1.501 0.160

Products

• Photography (RGB/NIR)

Products


• True Orthomosaics

Satellite-Google Earth

Full Scale Airphoto – 20cm

UAV photo – 3cm

Products



• Point Clouds

Products



• Point Clouds

• Digital Surface Models (DSM)

Products



• Point Clouds


• Digital Elevation Models (DEM)

Products



• Point Clouds



• Stereo Models

Products



• Point Clouds



• Stereo Models

• Planimetric Data/Contours

Volumes

Drainage

Wildlife Monitoring

Vegetation and Habitat

Tree Inventory

• 130 ha

• Mature stand

• Balsam and Spruce

Elevation Data

Dead Standing Trees

Automated Tree Heights

Tree Inventory

Benefits

• Safe

• Data Over Inaccessible Sites

• Minimal Disturbance

• Cost-Effective

• Less Field Time

• Accurate

• Variety of Products

• Snapshot in Time