GSOE	Ground Speed Optical Estimator
UAV	Unmanned aerial vehicle
MUAV	Miniature unmanned aerial vehicle
IMU	Inertial measurement unit
AHRS	Attitude and heading reference system
GNSS	Global Navigation Satellite Systems
LIDAR	Light detection and ranging
AI	Artificial Intelligence
SLAM	Simultaneous localization and mapping
TM	Template matching
ATA	Actual tracking angle
FOV	Field of view
HFOV	Horizontal field of view
VFOV	Vertical field of view
SSD	Sum of squared differences
GS	Ground speed
TAS	True airspeed
LLA	Geodetic latitude, longitude, and altitude coordinate system
SIL	Software in the loop
UDP	User data protocol
CoG	Center of gravity
WGS84	World Geodetic System ’84
COESA	Committee on Extension to the Standard Atmosphere
AGL	Altitude above ground level
$AG{L}_{ref}$	Altitude above ground level in respect to the reference point
SLS	Selective laser sintering
SLA	Stereolithography apparatus
FDM	Fused filament fabrication