airspace

espace aérien

Zone du ciel au-dessus d’un lieu, notamment sous le contrôle d’un pays ou d’une autorité aérienne.

En anglais simple : The area of sky above a place, especially one controlled by a country or aviation authority.

• The plane entered our airspace.
• The country closed its airspace overnight.
• Two aircraft violated national airspace yesterday.

Expressions courantes : national airspace, controlled airspace, enter airspace

espace aérien

Zone du ciel réservée à la circulation des avions et autres appareils.

En anglais simple : An area of sky set aside for aircraft to fly in.

• The drone stayed outside the designated airspace.
• Pilots must keep within the airspace reserved for this route.
• The airport needs more airspace for arriving aircraft.

Expressions courantes : designated airspace, reserved airspace, airspace for aircraft

spectre radioélectrique

Ensemble des fréquences disponibles pour transmettre des signaux de radio ou de télévision.

En anglais simple : The range of radio frequencies available for sending radio or television signals.

• The station needs more airspace.
• Several broadcasters competed for the same airspace.
• New regulations divided the available airspace among local radio stations.

Synonymes : broadcast spectrum

Expressions courantes : available airspace, broadcasting airspace, compete for airspace