Comparison of airborne turbulence - indi- cating doppler radar systems with ground - based doppler radar. These scans are interpreted by a computer and translated into an image. catter Doppler spectra /, 84-20440 Doppler radar. A complete set of scans takes around 5 minutes to complete. You can even change the map style and radar speed. Doppler radars scan the horizon in 360˚ degrees in a set pattern of angles from very low (along the horizon) to very high (almost straight up). Choose your main map layer, then add on any additional weather conditions you want. This process of emitting a signal, listening for any returned signal, then emitting the next signal, takes place very fast, up to around 1300 times each second. Computers analyze the strength of the returned pulse, the time it took to travel to the object and back, and the phase shift of the pulse. The Current Radar map shows areas of current precipitation. The interactive map makes it easy to navigate. The radar instrument receives a signal from this reflected energy during its listening period. See the latest United States RealVue weather satellite map, showing a realistic view of United States from space, as taken from weather satellites. A small fraction of the scattered energy is directed back toward the radar. Weather radar map shows the location of precipitation, its type (rain, snow, and ice) and its recent movement to help you plan your day. If the energy strikes an object (raindrop, snowflake, bug, bird, etc), the energy is scattered in all directions. Modern weather radars are mostly doppler radars, capable of detecting the motion of rain droplets in addition to intensity of the precipitation. The radar emits a burst, or pulse, of energy. NEXRAD (Next Generation Radar) stations obtain weather information (precipitation and wind) based upon returned energy.
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