Technology Glossary

• 1000Base LX
  Gigabit Ethernet transmitted over fiber using long wave laser transmitters
• 1000Base SX
  Gigabit Ethernet transmitted over fiber using short wave laser transmitters
• 1000Base T
  Gigabit Ethernet over twisted pair.
• 100Base FX
  100 Mbps Fast Ethernet system based on 4B/5B signal encoding transmitted over fiber optic cable.
• 100Base T
  Term used for the entire 100 Mbps Fast Ethernet system, including both twisted-pair and fiber optic media types.
• 10Base F
  10 Mbps Ethernet system based on Manchester signal encoding transmitted over fiber optic cable.
• 10Base T
  10 Mbps Ethernet system based on Manchester signal encoding transmitted over Category 3 or better twisted-pair cable
• 10Base2
  10 Mbps Ethernet system based on Manchester signal encoding transmitted over thin coaxial cable. Also called Thin Wire and...
• 10Base5
  10 Mbps Ethernet system based on Manchester signal encoding transmitted over thick coaxial cable. Also called Thick Net
• 802 1
  IEEE Working Group for High Level Interfaces, Network Management, Inter-networking, and other issues common across LAN technologies
• 802 3
  IEEE Working Group for Carrier Sense Multiple Access/Carrier Detect Local Area Networks.
• A l
  Anti-ice
• A P
  Autopilot
• A T
  Autothrottle
• AAATS
  Australian Advanced Air Traffic Services
• AAC
  Aeronautical Administration Communication (a class of communication which supports administrative communication)
• AAS
  Advanced Automation System (the end systems for all FAA air traffic control, located at the ARTCCs)
• AATT
  Advanced Aviation Transportation Technology
• ABM
  Abeam
• absorption
  The process by which electromagnetic radiation (EMR) is assimilated and converted into other forms of energy, primarily heat. Absorption takes...
• absorption band
  A range of wavelengths (or frequencies) of electromagnetic radiation that is assimilated by a substance.
• ACARS
  Aircraft Communications Addressing and Reporting System
• ACARS
  ARINC communications and address reporting system (digital communications system used primarily for aircraft-to-airline messages)
• ACARS MU
  ACARS Management Unit
• ACAS
  Airborne Collision and Avoidance System
• ACCA
  Automated Cloud Cover Assessment
• Acceptable Use Policy AUP
  A policy designed to describe the ways in which a computer or network may be used. AUPs usually include explicit...
• Acceptable use policy AUP
  a policy designed to limit the ways in which a computer or network can be used. Acceptable Use Policies usually...
• ACCESS CHARGE
  A fee charged subscribers or other telephone companies by a local exchange carrier for the use of its local exchange...
• ACCESS CHARGE
  A fee charged subscribers or other telephone companies by a local exchange carrier for the use of its local exchange...
• Access Charge
  A fee charged subscribers or other telephone companies by a local exchange carrier for the use of its local exchange...
• ACF
  Area Control Facility
• ACFS
  Advanced Concepts Flight Simulator (a generic "glass cockpit")
• ACK
  Acknowledge
• ACMS
  Aircraft Condition Monitoring System
• ACT
  Active
• Active Satellite
  A functioning satellite that receives and transmits or retransmits radio-communication signals to or from a base station.
• ADC
  Air Data Computer
• Address
  A unique identification of a device attached to a network. The address can used to identify either a specific location...
• ADF
  Automatic Direction Finder
• ADI
  Attitude Director lndicator
• ADLP
  Aircraft Data Link Processor (the Mode S subnetwork function onboard the aircraft that implements the OSI network layer protocols)
• ADMA
  Aviation Distributors and Manufactureres Association
• Administrative software
  computer programs that are used to expedite the storage and use of education data for efficient functioning in education settings....
• ADS
  Automatic Dependent Surveillance
• ADSL
  Asymmetric Digital Subscriber Line. Most common form of DSL where the data rate being transmitted to the subscriber is high...
• Advanced Television ATV
  New television technology that provides better audio and video quality than the cur-rent standard television broadcast system. High Definition TV...
• AECB
  Atomic Energy Control Board
• AERA
  Automated Enroute ATC
• Aerial Cable
  A cable suspended in the air on poles or other overhead structures
• AETN
  American Embassy Television Network
• AFCS
  Automatic Flight Control System
• AFDS
  Autopilot Flight Director System (also A/P F/D)
• Affiliate
  A broadcast station that airs a network
• AFS
  Automatic Flight System
• afterburner
  The afterburner is a second chamber which afterburing (or reheat) is a method of augmenting the basic thrust of an...
• AGATE
  Advanced General Aviation Transport Experiments
• Agenda Item
  At the FCC, a term that refers to the document which is to be voted on by the Com-mission at...
• Aggregator
  Any person or business who, in the normal course of business, provides a public telephone for the use of patrons...
• AGL
  Above Ground Level
• AGS
  Alaska Ground Station, Poker Flats AK.
• AHRS
  Attitude Heading Reference System
• AI
  Artificial Intelligence
• AIRS
  Advanced Infrared Sounder
• AL
  Allegheny
• albedo
  (1) The ratio of the amount of electromagnetic energy reflected by a surface to the amount of energy incident upon...
• Alert
  Indicator (visual or auditory) which provides information to the flightcrew in a timely manner about an event requiring pilot...
• algorithm
  (1) Any method of computation consisting of a comparatively small number of steps, which are specifically adapted to the solution...
• ALPA
  Air Line Pilots Association
• ALT
  Altitude
• ALT
  Alternate
• ALT HOLD
  Altitude Hold Mode
• Alternate formats
  Different means of providing information, including product documentation, to people with disabilities. Alternate methods may include, but are not limited...
• Alternating Current AC
  Electric current that continually reverses its direction. It is expressed in cycles per second (hertz or Hz).
• altitude
  height above a datum, the datum usually being mean sea level. Not the same as elevation, for altitude generally refers...
• ALTN
  Alternate
• AM
  Amplitude Modulation
• AM
  Aeromexico
• Amateur Radio Operator HAM
  A noncommercial, private radio operator. There are six classes of amateur radio licenses that can be earned after passing FCC-administered...
• ambient
  The condition of atmosphere existing around the engine, such as pressure or temperature.
• American Standard Code for Information
  Inter exchange (ASCII) ASCII is a uniform code used in computer and data communications systems. ASCII code letters, numbers, punctuation...
• ampere
  A unit of measurement of current flow.
• Amplitude Modulation AM
  A means of adding voice or data to a radio frequency transmission by varying the amplitude of the carrier frequency....
• Amplitude Modulation AM
  A type of transmission used in either the standard radio broadcast band at 535-1705 kilohertz, shortwave broadcasting, and in some...
• AMSS
  Aeronautical Mobile Satellite Service
• ANA
  All Nippon Airways
• Analog
  A signal that varies continuously such as a sound wave. Analog signal have frequency and bandwidth measured in hertz.
• analog
  A physical variable, which remains similar to another variable insofar as the proportional relationship between the two, remain the same...
• Analog
  Analog is "shorthand" for the word analogous, which means similar to. The signal being sent
• Analog Communication
  A communication format in which information is transmitted by modulating a continuous signal, such as a sound wave. Current TV...
• ANALOG SIGNAL
  A signaling method that uses continuous changes in the amplitude or frequency of a radio transmission to convey information.
• ANALOG SIGNAL
  A signaling method that uses continuous changes in the amplitude or frequency of a radio transmission to convey information.
• ancillary
  Auxiliary; accessory. in remote sensing, ancillary data are secondary data, pertaining to the area or classes of interest, such as...
• angle of drift
  The angle between the heading of the axis of a craft and its ground track.
• annotation
  Any marking on illustrative material for the purpose of clarification, such as numbers, letters, symbols, and signs. On digital Landsat...
• annular chamber
  This type of combustion chamber consists of a single concentric flame tube surrounding the spools. This is the most efficient...
• anomaly
  A deviation from the norm.
• ANSI
  American National Standards Institute
• Anti virus software
  computer programs designed to detect the presence or occurrence of a computer virus. The software subsequently signals an alert of...
• AOA
  Angle-of-Attack

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