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  2. Precision runway monitor - Wikipedia

    en.wikipedia.org/wiki/Precision_runway_monitor

    PRM uses a Monopulse Secondary Surveillance Radar (MSSR) that employs electronically-scanned antennas. Because the PRM has no scan rate restrictions, it is capable of providing a faster update rate (up to 1.0 second) over conventional systems, thereby providing better target presentation in terms of accuracy, resolution, and track prediction.

  3. Secondary surveillance radar - Wikipedia

    en.wikipedia.org/wiki/Secondary_surveillance_radar

    Secondary surveillance radar antenna (flat rectangle, top) mounted on an ASR-9 primary airport surveillance radar antenna (curved rectangle, bottom).. The need to be able to identify aircraft more easily and reliably led to another wartime radar development, the Identification Friend or Foe (IFF) system, which had been created as a means of positively identifying friendly aircraft from unknowns.

  4. Air traffic control radar beacon system - Wikipedia

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

    The antenna system of a typical air traffic control radar, the ASR-9. The curved reflector antenna on the bottom is the primary surveillance radar (PSR), and the flat antenna on top of it is the secondary surveillance radar (SSR). In operation the antenna rotates about a vertical axis, sweeping a vertical fan-shaped beam of microwaves around ...

  5. Monopulse radar - Wikipedia

    en.wikipedia.org/wiki/Monopulse_radar

    Monopulse radar is a radar system that uses additional encoding of the radio signal to provide accurate directional information. The name refers to its ability to extract range and direction from a single signal pulse. Monopulse radar avoids problems seen in conical scanning radar systems, which can be confused by rapid changes in signal strength.

  6. List of radars - Wikipedia

    en.wikipedia.org/wiki/List_of_radars

    AN/APS-147 improved AN/APS-143 Multi-Mode X-Band Maritime Surveillance Radar with Integrated IFF Interrogator by Telephonics for MH-60R Seahawk; AN/APS-148 Sea Vue light weight maritime / land surveillance radar by Raytheon; AN/APS-149 Littoral Surveillance Radar System (LSRS) developed by Raytheon for P-3C to replace earlier AN/APS-135/137. [78]

  7. 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 ...

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