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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 ...
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 ...
Location of Goshen in Elkhart County, Indiana. / 41.58194°N 85.83667°W / 41.58194; -85.83667. Goshen ( / ˈɡoʊʃən / GOH-shən) is a city in and the county seat of Elkhart County, Indiana, United States. [6] It is the smaller of the two principal cities of the Elkhart–Goshen Metropolitan Statistical Area, which in turn is part of ...
Goshen High School. / 41.580624°N 85.823139°W / 41.580624; -85.823139. Goshen High School is a public high school in Goshen, Indiana, United States. It serves grades 9-12 for Goshen Community Schools.
February 17, 1983. Goshen Historic District is a national historic district located at Goshen, Elkhart County, Indiana. The district encompasses 751 contributing buildings and 1 contributing site in the central business district and surrounding residential sections of Goshen. The town was developed between about 1840 and 1930, and includes ...
A strange, green blob lurched across a southern Indiana weather radar Wednesday morning. The National Weather Service says it wasn't caused by rain.
Continuous-wave radar ( CW radar) is a type of radar system where a known stable frequency continuous wave radio energy is transmitted and then received from any reflecting objects. [1] Individual objects can be detected using the Doppler effect, which causes the received signal to have a different frequency from the transmitted signal ...
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 .