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  2. Radar detector - Wikipedia

    en.wikipedia.org/wiki/Radar_detector

    An early radar detector Car radar detector (Japanese) A radar detector is an electronic device used by motorists to detect if their speed is being monitored by police or law enforcement using a radar gun. Most radar detectors are used so the driver can reduce the car's speed before being ticketed for speeding.

  3. SCR-270 - Wikipedia

    en.wikipedia.org/wiki/SCR-270

    It is also known as the Pearl Harbor Radar, since it was an SCR-270 set that detected the incoming raid about 45 minutes before the 7 December 1941, attack on Pearl Harbor commenced. Two versions were produced, the mobile SCR-270, and the fixed SCR-271 which used the same electronics but used an antenna with somewhat greater resolution.

  4. Blind spot monitor - Wikipedia

    en.wikipedia.org/wiki/Blind_spot_monitor

    Optical blind spot detector on side mirrors. The blind spot monitor or blind-spot monitoring is a vehicle-based sensor device that detects other vehicles located to the driver’s side and rear. Warnings can be visual, audible, vibrating, or tactile. [1] [2] Blind spot monitors may do more than monitor the sides and rear of the vehicle. They ...

  5. Corner reflector - Wikipedia

    en.wikipedia.org/wiki/Corner_reflector

    A corner reflector for radar testing. A corner reflector is a retroreflector consisting of three mutually perpendicular, intersecting flat reflective surfaces. It reflects waves incident from any direction directly towards the source, but translated.

  6. Sea-based X-band radar - Wikipedia

    en.wikipedia.org/wiki/Sea-based_X-band_Radar

    The Sea-Based X-band radar (SBX-1) is a floating, self-propelled, mobile active electronically scanned array early-warning radar station designed to operate in high winds and heavy seas. It was developed as part of the United States Department of Defense Missile Defense Agency's (MDA) Ballistic Missile Defense System.

  7. Joint Surveillance System - Wikipedia

    en.wikipedia.org/wiki/Joint_Surveillance_System

    The former J-31 San Pedro JSS ARSR-1 radar site, California USAF Battle Control System operators monitor the skies from the floor of the program's Eastern Air Defense Sector location. The Joint Surveillance System (JSS) is a joint United States Air Force and Federal Aviation Administration system for the atmospheric air defense of North America.

  8. History of radar - Wikipedia

    en.wikipedia.org/wiki/History_of_radar

    The secondary radar antenna array rides atop the primary radar dish at the radar site, with both rotating at approximately 12 revolutions per minute. The Digital Airport Surveillance Radar (DASR) is a newer TRACON radar system, replacing the old analog systems with digital technology.

  9. Radar speed sign - Wikipedia

    en.wikipedia.org/wiki/Radar_speed_sign

    Standard radar speed sign with block letters. Pictured with solar panel.. A radar speed sign or speed feedback sign is an interactive sign comprising a speed-measuring device (e.g. a loop detector or radar) and a message sign generally constructed of a series of LEDs, which displays vehicle speed of approaching motorists. [1]

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