COTS	Commercial off-the-shelf
DCM	Direct cosine matrix
DoF	Degree of freedom
EU	European Union
GNSS	Global navigation satellite system
GPS	Global positioning system
IMU	Inertial measurement unit
KW	Kilowatt
NDT	Non-destructive testing
RANSAC	Random sample consensus
RMS	Root mean square
ROI	Region of interest
RTK	Real-time kinematic
SURF	Speeded-up robust features
UAV	Unmanned aerial vehicle
UT	Ultrasonic testing