navigation acronyms, abbreviations and definitions - International ...

ASTRA Application of Space Techniques Related to Aviation
ASTRAEA Autonomous Sys Technology Related Airborne Eval & Assessment
Project to develop the next-generation of UAVs for civil applications.
ASTRON Applications on the Synergy of Earth Obs with Sat Telecoms & Nav
Under EC 5th Framework RTD Programme.
Astronomical lat Angular distance between the plane of the celestial equator and the
point’s plumb line.
Astronomical lon Angle between the plane of the prime meridian and the plane of the
point’s celestial meridian.
ASV Advanced Safety Vehicle (Japanese concept)
AT atomic time
AT-VASIS Abbreviated ‘T’ Visual Approach Slope Indicator System
ATA actual time of arrival
ATA Air Transport Alliance (EU)
ATA Air Transport Association (US)
ATA automatic tracking aid
ATAG Air Transport Action Group
Industry lobby gp, 80 members funded by IATA, Boeing and Airbus.
ATC adaptive tightly-coupled (eg GPS/INS integration)
ATC air traffic control
ATC ancillary terrestrial component (broadband fixed transmitters)
ATC automatic traffic counter (roads)
ATC automatic train control
ATC EUC Air Traffic Control European Union Co-ordination (~8,000 ATCOs)
ATCAA air traffic control assigned airspace
ATCC air traffic control centre
ATCO air traffic control officer
ATCRBS Air Traffic Control and Radar Beacon System
ATCRU air traffic control radar unit
ATD actual time of departure
ATE along track error
ATE automatic test equipment
ATF adaptive transversal filter (eg for minimising jamming signals)
ATFM air traffic flow management
ATIS advanced traveller information system
ATIS Alliance for Telecommunications Industry Solutions (US)
ATIS automatic terminal information station/service
Continuous broadcast of routine non-control aerodrome information.
ATK available tonne kilometres
Measures air available total capacity (combined passenger and cargo).
ATLAS Airborne Topographic Laser System (QinetiQ)
ATLB Air Transport Licensing Board
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