what's the radar?
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radar radar definition. A method of finding the position and velocity of an object by bouncing a radio wave off it and analyzing the reflected wave. Radar is an acronym for radio detection and ranging. Note: Police use radar techniques to determine the speed of automobiles.
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Radar gun The radar speed threshold is set at or above the maximum legal vehicle speed. The radar triggers the camera to take several pictures when a nearby object exceeds this speed. Two pictures are required to determine vehicle speed using roadway survey markings.
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- Radar is an acronym that stands for RAdio Detection And Ranging. A weather radar consists of a parabolic dish (it looks like a satellite dish) encased in a protective dome and mounted on a tower of up to five stories tall.About 150 NEXRAD (NEXt generation of weather RADar) Doppler radars were installed throughout the U.S. in the 1990s.he radar itself does not delineate between rain and snow but AccuWeather's proprietary algorithms do, based on atmospheric conditions. The state-level Snow/Ice/Rain (Standard) radar images update every 5 minutes on AccuWeather.com Premium, which also gives access to longer loops of radar data.
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radar Doppler radar - radar that uses the Doppler shift to measure velocity. early warning radar - a radar that is part of an early warning system. measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something.
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- on somebody's radar (screen). among the things being considered by someone The problem of trash disposal is on everyone's radar screen right now. This status puts the city on the radar screens of big corporations. Usage notes: often used with words like not, off, and under to mean that something is not considered: The disease is sometimes not even on a doctor's radar screen. Some of these companies operate under everyone's radar.
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History of Radar His discovery in 1842 was dubbed the Doppler Principle, the concept defining how radar determines speed. Of course there were no radars in that time, but his principles created the foundation for radar development many years later. The First Radar Built By the 1930s, scientists had noticed when ships passed between radio transmitters some of the signal reflected back to the source.
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- If you shout hello, the sound may bounce back at you from a large object. You then hear your own voice coming back. Your returning voice is called an echo. Radar and sonar are electronic devices that use the principle of an echo to detect and locate objects.
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Radar chart A radar chart is a graphical method of displaying multivariate data in the form of a two-dimensional chart of three or more quantitative variables represented on axes starting from the same point. The relative position and angle of the axes is typically uninformative. The radar chart is also known as web chart, spider chart, star chart, star plot, cobweb chart, irregular polygon, polar chart, or kiviat diagram.
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What are the different uses of Radar? The radar dish, or antenna, transmits pulses of radio waves or micro waves which bounce off any object in their path. The object returns a tiny part of the wave ’s energy back to the dish or antenna which is usually located at the same site as the transmitter.
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- The Pro 300 radar detector detects all U.S. radar and laser guns and provides the earliest possible warning, including the latest instant-on and POP mode threats. The Pro 300 typically delivers 10 times the range of cheap imports.
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Radar Radar of the type used for detection of aircraft. It rotates steadily sweeping the airspace with a narrow beam. Radar is an object detection system which uses radio waves to determine the range, altitude, direction, or speed of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain.
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Marine Radarfor the Recreational Boater By Tom Burden, Last updated: 2/14/2017. Marine radars are the best collision avoidance system ever developed for the recreational boater. Radar systems let you “see” through darkness, fog and stormy weather conditions. Once used only on large vessels, radar units are now compact, draw little electricity and are sized to fit boats as small as 18' in length.
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Doppler radar Doppler radar. A Doppler radar is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance. It does this by bouncing a microwave signal off a desired target and analyzing how the object's motion has altered the frequency of the returned signal. This variation gives direct and highly accurate measurements of the radial component of a target's velocity relative to the radar. Doppler radars are used in aviation, sounding satellites, meteorology, radar guns, radiology a
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How Does Doppler Radar Work? True Doppler radar is what is used by police officer radar guns to determine the speed of a motor vehicle. Another form is the Pulse-Doppler radar which is used to track the speed of weather precipitation.
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- Local Weather Radar Sites in Southern Florida. Radar is an acronym that stands for RAdio Detection And Ranging. A weather radar consists of a parabolic dish (it looks like a satellite dish) encased in a protective dome and mounted on a tower of up to five stories tall. About 150 NEXRAD (NEXt generation of weather RADar) Doppler radars were installed throughout the U.S. in the 1990s. The radar itself does not delineate between rain and snow but AccuWeather's proprietary algorithms do, based on atmospheric conditions.
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What are the different uses of Radar? Radars do not use sound as a signal, but the Electromagnetic waves (EM) called the Radio waves and microwaves. Radio waves and Micro waves are two different types of electromagnetic waves. EM waves, like all waves, transport energy and can do so through vacuum.
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What are the different uses of Radar? Image Credit: Main Image: Radar is an object-detection system which utilizes Electromagnetic waves, specifically radio waves to determine the range, altitude, direction, or speed of both moving and fixed objects such as aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations.
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- Police RADAR. RADAR speed detectors bounce microwave radiation off of moving vehicles and detect the reflected waves. These waves are shifted in frequency by the Doppler effect, and the beat frequency between the directed and reflected waves provides a measure of the vehicle speed.
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- Radar is an acronym that stands for RAdio Detection And Ranging. A weather radar consists of a parabolic dish (it looks like a satellite dish) encased in a protective dome and mounted on a tower of up to five stories tall.
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- The Airport Surveillance Radar, Modelll (ASR-ll) is ajoint Federal Aviation Administration (FAA)/Department of Defense (DOD) procurement program with the United States Air Force (USAF) assuming overall lead responsibility. The DOD has designated their program as the Digital Airport Surveillance Radar (DASR). A joint F
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Definitions &Translations GCIDE (0.00 / 0 votes) Rate this definition: radar (n.). The method of detecting objects, finding their distance, or determining their speed, by use of a radar device; as, modern radar can detect objects as small as raindrops. Origin: [acronym from RAdio Detection And Ranging.].
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Radar Basics Figure 2: Radar pulse relationships. A pulse radar is a radar device that emits short and powerful pulses and in the silent period receives the echo signals. In contrast to the continuous wave radar the transmitter is turned off before the measurement is finished.
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History of radar 1 Synthetic-aperture radar (SAR), was invented in the early 1950s at Goodyear Aircraft Corporation. 2  Using a single, relatively small antenna carried on an aircraft, a SAR combines the returns from each pulse to produce a high-resolution image of the terrain comparable to that obtained by a much larger antenna.he most widespread radar device today is undoubtedly the radar gun. This is a small, usually hand-held, Doppler radar that is used to detect the speed of objects, especially trucks and automobiles in regulating traffic, as well as pitched baseballs, runners, or other moving objects in sports.
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How radar works How radar works. The basics of radars is that a beam of energy, called radio waves, is emitted from an antenna. As they strike objects in the atmosphere, the energy is scattered in all directions with some of the energy reflected directly back to the radar. The larger the object, the greater the amount of energy that is returned to the radar.
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- This status puts the city on the radar screens of big corporations. Usage notes: often used with words like not, off, and under to mean that something is not considered: The disease is sometimes not even on a doctor's radar screen. Some of these companies operate under everyone's radar.
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Measuring Precipitation The Current Radar map shows areas of current precipitation. A weather radar is used to locate precipitation, calculate its motion, estimate its type (rain, snow, hail, etc.), and forecast its future position and intensity.