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A plan position indicator (PPI) is a type of radar display that represents the radar antenna in the center of the display, with the distance from it and height above ground drawn as concentric circles. As the radar antenna rotates, a radial trace on the PPI sweeps in unison with it about the center point. It is the most common type of radar ...
Radar 4000, XL, IS, IS2: This product features Doppler radar data compiled by National Weather Service radar sites. The segment was introduced with the WeatherStar 4000 and originally provided both a 90-minute loop and a static image showing the most recent radar imagery for a 125-mile (201 km) radius of the STAR's headend location; beginning ...
Weather radar in Norman, Oklahoma with rainshaft Weather (WF44) radar dish University of Oklahoma OU-PRIME C-band, polarimetric, weather radar during construction. 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.).
Weatherscan was an American digital cable and satellite television network owned by Allen Media Group. [3] [4] A spinoff of The Weather Channel, Weatherscan featured uninterrupted local weather information in graphical format on a continuous loop that was generated by an IntelliStar unit installed at the cable provider's headend; unlike The Weather Channel, Weatherscan did not feature on-air ...
A Doppler radar is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance. [1] 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.
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 ...
A Doppler on Wheels recorded winds of 263–271 mph (423–436 km/h) approximately 30–50 m (98–164 ft) above the radar level. Following calculations to more accurately determine peak wind speeds, it was published that ground-relative winds of 309–318 mph (497–512 km/h) could be observed briefly to the immediate east of the main circulation.
A NEXRAD weather radar currently used by the National Weather Service (NWS) is a 10 cm wavelength (2700-3000 MHz) radar capable of a complete scan every 4.5 to 10 minutes, depending on the number of angles scanned, and depending on whether or not MESO-SAILS [7] is active, which adds a supplemental low-level scan while completing a volume scan ...
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