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2. 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 ...

3. NEXRAD - Wikipedia

   en.wikipedia.org/wiki/NEXRAD

   NEXRAD or Nexrad (Next-Generation Radar) is a network of 159 high-resolution S-band Doppler weather radars operated by the National Weather Service (NWS), an agency of the National Oceanic and Atmospheric Administration (NOAA) within the United States Department of Commerce, the Federal Aviation Administration (FAA) within the Department of Transportation, and the U.S. Air Force within the ...

4. Hollis, Maine - Wikipedia

   en.wikipedia.org/wiki/Hollis,_Maine

   23-33665. GNIS feature ID. 0582523. Website. hollismaine.org. Hollis is a town in York County, Maine, United States. The population was 4,745 at the 2020 census. [2] Hollis is a rural bedroom community of Portland and is part of the Portland– South Portland – Biddeford metropolitan statistical area .

5. Pulse-Doppler radar - Wikipedia

   en.wikipedia.org/wiki/Pulse-Doppler_radar

   A pulse-Doppler radar is a radar system that determines the range to a target using pulse-timing techniques, and uses the Doppler effect of the returned signal to determine the target object's velocity. It combines the features of pulse radars and continuous-wave radars, which were formerly separate due to the complexity of the electronics .

6. Doppler on Wheels - Wikipedia

   en.wikipedia.org/wiki/Doppler_on_Wheels

   Doppler on Wheels. DOW 7 on display at the USA Science and Engineering Festival in 2010. Doppler on Wheels (or DOW) is a fleet of X-band and C-band mobile and quickly-deployable truck-borne radars which are the core instrumentation of the Flexible Array of Radars and Mesonets [1] affiliated with the University of Illinois [2] and led by Joshua ...

7. Green Satin radar - Wikipedia

   en.wikipedia.org/wiki/Green_Satin_radar

   Green Satin radar. Green Satin, also known as ARI 5851, was a Doppler radar system developed by the Royal Air Force as an air navigation aid. The system provided direct measures of the drift speed and direction, and thereby allowed accurate calculation of the winds aloft. These values were then fed into the Navigation and Bombing System .

8. Terminal Doppler Weather Radar - Wikipedia

   en.wikipedia.org/wiki/Terminal_Doppler_Weather_Radar

   Terminal Doppler Weather Radar (TDWR) is a Doppler weather radar system with a three-dimensional "pencil beam" used primarily for the detection of hazardous wind shear conditions, precipitation, and winds aloft on and near major airports situated in climates with great exposure to thunderstorms in the United States. [1]

9. Zhuk (radar) - Wikipedia

   en.wikipedia.org/wiki/Zhuk_(radar)

   The Zhuk (Beetle) family of X band pulse-Doppler radars provide aircraft with two modes of operation, air-to-air and air-to-surface. The air-to-air mode of the Zhuk is capable of detecting targets and measuring their coordinates, range and speed. [1] The radar has a look-down/shoot-down capability for air targets against a cluttered or water ...