Glossary

ACAS	Airborne Collision Avoidance System
AGAS	High Level European Action Group for ATM Safety
ATM	Air Traffic Management
DASC	Digital Avionics System Conference
ECAC	European Civil Aviation Conference
EEC	EUROCONTROL Experimental Centre
EGNOS	European Geostationary Navigation Overlay Service
ES	Extended Squitter
ESARR	Eurocontrol Safety Regulatory Requirements
ESTB	EGNOS System Test Bed
GBAS	Ground Based Augmentation System (for GPS)
GPS	Global Positioning System
HTML	HyperText Markup Language
MFF	Mediterranean Free Flight
MHz	Mega Hertz
RT	Radio Telephony
SBAS	Satellite Based Augmentation System
SPS	STDMA/VDL-4 Performance Simulator See http://blinder.lfv.se/ans/card/docs/rio/simulat3.pdf
STDMA	Self-organizing Time Division Multiple Access
TIS-B	Traffic Information Service - Broadcast
VDL	VHF Data Link
VHF	Very High Frequency

A more extensive glossary can be found at http://www.eurocontrol.be/eatmp/glossary/acronyms/acronyms.htm