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It was known as London Radar, and was the first of its type in the world. [13] London Radar had two AN/CPS-1 sets, and a Marconi S-232 50cm radar, with a 70-mile range. Until better electronics had been installed, ground-control approaches at airports, in bad weather, were the scenes of a series of terrible accidents in the 1950s.
The frequency selection of weather radar is a performance compromise between precipitation reflectivity and attenuation due to atmospheric water vapor. Some weather radars uses doppler shift to measure wind speeds and dual-polarization for identification of types of precipitations. [3] [4] Weather radar; Wind profilers; Millimetre cloud radar ...
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 ...
Dive in and discover how weather impacts daily life, explores the forces of nature, and guides our understanding of the world around us. Get the London, England local weather forecast by the hour ...
The Meteorological Office, abbreviated as the Met Office, [2] is the United Kingdom's national weather and climate service. It is an executive agency and trading fund of the Department for Science, Innovation and Technology and is led by CEO [3] Penelope Endersby, who took on the role as Chief Executive in December 2018 and is the first woman to do so. [4]
The air traffic control tower of Mumbai International Airport in India.. Air traffic control (ATC) is a service provided by ground-based air traffic controllers (people) who direct aircraft on the ground and through a given section of controlled airspace, and can provide advisory services to aircraft in non-controlled airspace.
Automatic terminal information service, or ATIS, is a continuous broadcast of recorded aeronautical information in busier terminal areas. ATIS broadcasts contain essential information, such as current weather information, active runways, available approaches, and any other information required by the pilots, such as important NOTAMs.
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 ...
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