Field of View. How much environment you can see through the camera lens.
European Aviation Safety Agency. Responsible for safety legislation in civil aviation across Europe. It carries out certification, regulation, and standardisation, and also performs investigation and monitoring.
Civil Aviation Publication. Items published by the CAA, all referenced with a unique number.
Nautical Mile. Equivalent to one minute of latitude which you sometimes see this used in aviation. For example you're not permitted to fly within 3.5nm or an aerodrome without permission.
Visual Flight Rules. There are two sets of regulations controlling civil aviation with the other being IFR (Instrument Flight Rules). VFR applies to drones currently as it means that the pilot can only fly using visual data (ie being able to see the drone) and not solely rely on instruments.
Instrument Flight Rules. There are two sets of regulations controlling civil aviation with the other being VFR (Visual Flight Rules). IFR means that the pilot can fly without visual data and rely on the craft's instruments.