CNS/ATM
Communications, Navigation, Surveillance & Air Traffic Management Systems which are composed of ground-based and satellite-based systems which provide:
** Air-ground and ground-ground digital voice-data communications;
** Navigation guidance to airborne and aircraft on the ground maneuvering at an airport;
** Surveillance of cooperating and non-cooperating aircraft within defined airspace and maneuvering aircraft at an airport
** Air traffic management systems are specific integrated systems together with CNS assets to provide air traffic and airspace management services.
AVIATION INFRASTRUCTURE
Aviation Infrastructures are essentially airports and all airports within and associated with airports such as terminal buildings, runways, taxiways, aircraft parking ramps