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Monarch Airlines, simply known as Monarch, was a British charter and scheduled airline founded by Bill Hodgson and Don Peacock and financed by the Swiss Sergio Mantegazza family. The company later became a low-cost airline [ 3][ 4] in 2004 before abandoning charter flying completely. The airline's headquarters were based at London–Luton, and ...
The King's Helicopter Flight [33] (TKHF) is part of the King's Private Secretary's Department of the Royal Household, and is tasked by the Royal Travel Office at Buckingham Palace. Known as The Queen's, or King's, Helicopter Flight it is based at RAF Odiham [34] and operates two Sikorsky S-76C++ helicopters, with the registrations G-XXEB [35 ...
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 ...
An airport surveillance radar (ASR) is a radar system used at airports to detect and display the presence and position of aircraft in the terminal area, the airspace around airports. It is the main air traffic control system for the airspace around airports. At large airports it typically controls traffic within a radius of 60 miles (96 km) of ...
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 .
However, since humans reflect far less radar energy than metal does, these systems require sophisticated technology to isolate human targets and moreover to process any sort of detailed image. Through-the-wall radars can be made with Ultra Wideband impulse radar, micro-Doppler radar, and synthetic aperture radar (SAR). [5] Imaging radar; 3D radar
Flightradar24. Flightradar24 is a Swedish Internet -based service that shows real-time aircraft flight tracking information on a map. It includes flight tracking information, origins and destinations, flight numbers, aircraft types, positions, altitudes, headings and speeds. It can also show time-lapse replays of previous tracks and historical ...
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 ...