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  2. Weather radar - Wikipedia

    en.wikipedia.org/wiki/Weather_radar

    Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.). Modern weather radars are mostly pulse-Doppler radars, capable of detecting the motion of rain droplets in addition to the intensity of the ...

  3. Doppler radar - Wikipedia

    en.wikipedia.org/wiki/Doppler_radar

    Doppler effect. The emitted signal toward the car is reflected back with a variation of frequency that depends on the speed away/toward the radar (160 km/h). This is only a component of the real speed (170 km/h). The Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842, is the difference ...

  4. NOAA: Doppler radar indicates we may be underestimating ... - AOL

    www.aol.com/news/noaa-doppler-radar-indicates...

    NOAA: Doppler radar indicates we may be underestimating tornado wind speeds. NORMAN, Okla. — When a tornado tears through a community, a National Weather Service storm survey team will sort ...

  5. Canadian weather radar network - Wikipedia

    en.wikipedia.org/wiki/Canadian_weather_radar_network

    The Canadian weather radar network consists of 33 weather radars spanning Canada's most populated regions. Their primary purpose is the early detection of precipitation, its motion and the threat it poses to life and property. Each had until 2018 a range of 256 km (159 mi) in radius around the site to detect reflectivity, 3 angles with a range ...

  6. Bistatic radar - Wikipedia

    en.wikipedia.org/wiki/Bistatic_radar

    Bistatic radar is a radar system comprising a transmitter and receiver that are separated by a distance comparable to the expected target distance. Conversely, a conventional radar in which the transmitter and receiver are co-located is called a monostatic radar. [1] A system containing multiple spatially diverse monostatic or bistatic radar ...

  7. Radar - Wikipedia

    en.wikipedia.org/wiki/Radar

    Radar is a system that uses radio waves to determine the distance (), direction (azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method [1] used to detect and track aircraft, ships, spacecraft, guided missiles, motor vehicles, map weather formations, and terrain.

  8. Radar signal characteristics - Wikipedia

    en.wikipedia.org/wiki/Radar_signal_characteristics

    The pulse width ( ) (or pulse duration) of the transmitted signal is the time, typically in microseconds, each pulse lasts. If the pulse is not a perfect square wave, the time is typically measured between the 50% power levels of the rising and falling edges of the pulse. The pulse width must be long enough to ensure that the radar emits ...

  9. Advanced Technology Demonstrator - Wikipedia

    en.wikipedia.org/wiki/Advanced_Technology...

    4.3 m (14 ft) Azimuth. 360°. Advanced Technology Demonstrator (ATD) is an experimental weather radar system using Phased Array technology seeking to enhance Phased Array capabilities with the addition of dual-polarity and pulse compression. [ 1] Its predecessor, MPAR, was the first large-scale PAR experiment taken on by NOAA in 2003, and was ...

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