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  2. Emergency position-indicating radiobeacon - Wikipedia

    en.wikipedia.org/wiki/Emergency_position...

    Overview diagram of COSPAS-SARSAT communication system used to detect and locate ELTs, EPIRBs, and PLBs First generation EPIRB emergency locator beacons. An emergency position-indicating radiobeacon (EPIRB) is a type of emergency locator beacon for commercial and recreational boats, a portable, battery-powered radio transmitter used in emergencies to locate boaters in distress and in need of ...

  3. Emergency locator beacon - Wikipedia

    en.wikipedia.org/wiki/Emergency_locator_beacon

    An emergency locator beacon is a radio beacon, a portable battery powered radio transmitter, used to locate airplanes, vessels, and persons in distress and in need of immediate rescue. Various types of emergency locator beacons are carried by aircraft, ships, vehicles, hikers and cross-country skiers.

  4. Command center - Wikipedia

    en.wikipedia.org/wiki/Command_center

    A command center is a central place for carrying out orders and for supervising tasks, also known as a headquarters, or HQ. Common to every command center are three general activities: inputs, processes, and outputs. The inbound aspect is communications (usually intelligence and other field reports). Inbound elements are "sitreps" (situation ...

  5. Radio beacon - Wikipedia

    en.wikipedia.org/wiki/Radio_beacon

    In navigation, a radio beacon or radiobeacon is a kind of beacon, a device that marks a fixed location and allows direction-finding equipment to find relative bearing. But instead of employing visible light , radio beacons transmit electromagnetic radiation in the radio wave band .

  6. Distress signal - Wikipedia

    en.wikipedia.org/wiki/Tactical_beacon

    Distress signals are communicated by transmitting radio signals, displaying a visually observable item or illumination, or making a sound audible from a distance. A distress signal indicates that a person or group of people, watercraft , aircraft , or other vehicle is threatened by a serious or imminent danger and requires immediate assistance ...

  7. Combat information center - Wikipedia

    en.wikipedia.org/wiki/Combat_information_center

    A combat information center (CIC) or action information centre (AIC) is a room in a warship or AWACS aircraft that functions as a tactical center and provides processed information for command and control of the near battlespace or area of operations. Within other military commands, rooms serving similar functions are known as command centers.

  8. Underwater locator beacon - Wikipedia

    en.wikipedia.org/wiki/Underwater_locator_beacon

    A 4-inch (100 mm) underwater locator beacon, with ballpoint pen for scale A ULB attached to a bracket on a cockpit voice recorder. An underwater locator beacon (ULB), underwater locating device (ULD), or underwater acoustic beacon is a device that emits an acoustic pulse intended to guide searchers equipped with a suitable receiver to the location of the beacon underwater.

  9. Types of beacons - Wikipedia

    en.wikipedia.org/wiki/Types_of_beacons

    A single beacon can transmit one, two or all three frametypes. The three frametypes are: Beacon protocol - Google's Eddystone. URL: a URL (i.e. a website link) is transmitted to the device, eliminating the need for an installed Mobile App. UID (similar to Apple's UUID): a 16 digit string of characters, which can identify the individual beacon.