Glossary

ADS-B	Automatic Dependent Surveillance Broadcast. Next generation ATC system permitting air-to-air communication and air traffic coordination without the involvement of a ground station.
ADS-B In	An ADS-B system feature that enables the display of real time ADS-B tracks on a situation display in the aircraft cockpit
ADS-B Out	An ADS-B system feature that enables frequent broadcast of accurate aircraft position and vector data together with other information
ATC	Air Traffic Control
ATM	Air Traffic Management
ATZ	Air Traffic Zone
CAA	Civil Aviation Authority
CDTI	Cockpit Display of Traffic Information
Eurocontrol	European Organisation for the Safety of Air Navigation
DME	Distance Measuring Equipment
FAA	Federal Aviation Administration
FGPA	Field Programmable Gate Array
FL	Flight Level
GA	General Aviation
GAT	General Air Traffic
GPS	Global Positioning Satellite
HF	High Frequency
ICAO	International Civil Aviation Organisation
IFR	Instrument Flight Rules
MODE S	Mode Select - a bidirectional one-to-one data-link for ground to air communication.
PSS	Passive Surveillance System
SSR	Secondary Surveillance Radar
TACAN	Tactical Air Navigation System
TDOA	Time Difference of Arrival
TMA	Terminal Control Area
VFR	Visual Flight Rules