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Lidar has a wide range of applications; one use is in traffic enforcement and in particular speed limit enforcement, has been gradually replacing radar since 2000. [1] Current devices are designed to automate the entire process of speed detection, vehicle identification, driver identification and evidentiary documentation.
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.
The radar used an 18 inches (460 mm) parabolic reflector driven in a spiral at 1000 rpm by a 1 ⁄ 2 horsepower electric motor. The scanning went from dead astern to 45 degrees out over a period of 18 rotations, and then back in again, scanning out a 90 degree cone over a period of about 2 + 1 ⁄ 4 seconds.
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.
Radar warning receiver (RWR) systems detect the radio emissions of radar systems. Their primary purpose is to issue a warning when a radar signal that might be a threat is detected, like a fighter aircraft's fire control radar. The warning can then be used, manually or automatically, to evade the detected threat.
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 ...
Mount Tamalpais Air Force Station was the military installation where the 666th Aircraft Control and Warning Squadron was activated on January 1, 1951. [ 6 ] [ 7 ] [ 8 ] The squadron "began operating a pair of AN/CPS-6 B radars at this Bay-area site in late 1951".
The world's first airborne monopulse radar system was the British Ferranti-designed AIRPASS system which went into service in 1960 on the RAF's English Electric Lightning interceptor aircraft. An early monopulse radar development, in 1958, was the AN/FPS-16, on which NRL and RCA collaborated. The earliest version, XN-1, utilised a metal plate lens.