Unmanned Aerial Vehicles
Unmanned aerial vehicles (fixed wing or multi copters) may pose a threat to society.
From an acoustic point of view, there is a difference between a:
- fixed wing, that is acoustically speaking a tonal, narrow banded sound source
- multi copter, that is acoustically speaking a wide banded sound source
From a signal processing point of view, a tonal sound source is easier to detect, localise and track.
Obviously, the detection range depends upon:
- the design parameters of the unmanned aerial vehicle ( e.g weight, number –and diameter of propeller blades, rpm )
- weather conditions
As a rule of thumb, toy shop bought unmanned aerial vehicles can be detected, localised and tracked in a range between 250-1000 meters.