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  2. Automatic Dependent Surveillance–Broadcast - Wikipedia

    en.wikipedia.org/wiki/Automatic_Dependent...

    Conceptual of the ADS-B system, illustrating radio links between aircraft, ground station and satellite. Automatic Dependent Surveillance–Broadcast (ADS-B) is an aviation surveillance technology and form of electronic conspicuity in which an aircraft determines its position via satellite navigation or other sensors and periodically broadcasts its position and other related data, enabling it ...

  3. Aviation transponder interrogation modes - Wikipedia

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

    Mode S transponders are compatible with Mode A and Mode C Secondary Surveillance Radar (SSR) systems. [2] This is the type of transponder that is used for TCAS or ACAS II (Airborne Collision Avoidance System) functions, and is required to implement the extended squitter broadcast, one means of participating in ADS-B systems. A TCAS-equipped ...

  4. List of transponder codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Transponder_Codes

    Non-discrete mode A code reserved use in mode S radar/ADS-B environment where the aircraft identification will be used to correlate the flight plan instead of the mode A code. [1] US: Used exclusively by ADS-B aircraft to inhibit mode 3A transmission. [3] US: Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2.

  5. 'Drone sightings' prompt worries, but these theories could ...

    www.aol.com/news/drone-sightings-prompt-worries...

    “If the drones are being flown legally, the ADS-B transponder on the drone should make it easy for authorities to identify the drone and the operator,” he said. UFOs? Could the drones be the ...

  6. Airport surveillance and broadcast systems - Wikipedia

    en.wikipedia.org/wiki/Airport_surveillance_and...

    The data that ASDE-X uses comes from a surface movement radar located on the airport traffic control tower or remote tower, multilateration sensors, ADS-B (Automatic Dependent Surveillance-Broadcast) sensors, terminal radars, the terminal automation system, and from aircraft transponders. By fusing the data from these sources, ASDE-X is able to ...

  7. DC plane crash: ATC staffing levels under scrutiny as barges ...

    www.aol.com/news/dc-plane-crash-atc-staffing...

    "ADS-B is more accurate and more reliable than simply a transponder that is pinging on radar." A general view of the control tower at Reagan National Airport, Friday, January 31, 2025.