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  2. Radar beacon - Wikipedia

    en.wikipedia.org/wiki/Radar_beacon

    Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1] – defined as "A transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the ...

  3. Air traffic control radar beacon system - Wikipedia

    en.wikipedia.org/wiki/Air_traffic_control_radar...

    Mode 3/A is used to identify each aircraft in the radar's coverage area. Mode C is used to request/report an aircraft's altitude. Two other modes, mode 4 and mode S, are not considered part of the ATCRBS system, but they use the same transmit and receive hardware. Mode 4 is used by military aircraft for the Identification Friend or Foe (IFF ...

  4. Track while scan - Wikipedia

    en.wikipedia.org/wiki/Track_while_scan

    Track-while-scan (TWS) is a mode of radar operation in which the radar allocates part of its power to tracking a target or targets (up to forty with modern radar) while part of its power is allocated to scanning. [1] It is similar to but functions differently in comparison to its counterparts range-while-search (RWS), long range search (LRS ...

  5. Identification friend or foe - Wikipedia

    en.wikipedia.org/wiki/Identification_friend_or_foe

    Model XAE IFF kit, the first radio recognition IFF system in the U.S. Identification, friend or foe (IFF) is a combat identification system designed for command and control. It uses a transponder that listens for an interrogation signal and then sends a response that identifies the broadcaster. IFF systems usually use radar frequencies, but ...

  6. Aviation transponder interrogation modes - Wikipedia

    en.wikipedia.org/wiki/Aviation_transponder...

    The aviation transponder interrogation modes are the standard formats of pulsed sequences from an interrogating Secondary Surveillance Radar (SSR) or similar Automatic Dependent Surveillance-Broadcast (ADS-B) system. The reply format is usually referred to as a "code" from a transponder, which is used to determine detailed information from a ...

  7. Alertness - Wikipedia

    en.wikipedia.org/wiki/Alertness

    v. t. e. Alertness is a state of active attention characterized by high sensory awareness. Someone who is alert is vigilant and promptly meets danger or emergency, or is quick to perceive and act. Alertness is a psychological and physiological state. Lack of alertness is a symptom of a number of conditions, including narcolepsy, attention ...

  8. Environmental communication - Wikipedia

    en.wikipedia.org/wiki/Environmental_communication

    Environmental communication is "the dissemination of information and the implementation of communication practices that are related to the environment. In the beginning, environmental communication was a narrow area of communication; however, nowadays, it is a broad field that includes research and practices regarding how different actors (e.g ...

  9. Takeoff/go-around switch - Wikipedia

    en.wikipedia.org/wiki/Takeoff/go-around_switch

    A takeoff/go-around switch (TO/GA; / ˈ t oʊ ɡ ə /) is a switch on the autothrottle of modern large aircraft, with two modes: takeoff (TO) and go-around (GA). The mode is dependent on the phase of flight; usually, on approach to land, the autopilot will be set to approach mode, therefore if the TO/GA switch is pressed it will activate the go-around mode of the autothrottle (about 90–92% ...