UAV	Unmanned Aerial Vehicle
GPS	Global Positioning System
COTS	Commercial Of The Shelf
AGL	Above Ground Level
IMU	Inertial Measurement Unit
RADAR	RAdio Detecting And Ranging
SONAR	SOund Navigating And Ranging
ASL	Above Sea Level
VTOL	Vertical TakeOff and Landing
LK	Lucas and Kanade
ID3	Iterative Dichotomiser 3
GCS	Ground Control Station
SITL	Software In The Loop
LIDAR	LIght Detecting And Ranging
USD	United States Dollar
FPS	Frames Per Second
FOV	Field Of View
GE	Google Earth
SRTM	Shuttle Radar Topography Mission
RTL	Return To Launch
MSE	Mean Squared Error
MAE	Mean Absolute Error