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英文字典中文字典相关资料:


  • Doppler radar - Wikipedia
    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
  • Weather radar - Wikipedia
    A 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 )
  • Doppler radar - Wikiwand
    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
  • Using and Understanding Doppler Radar - National Weather Service
    The ability to detect the "shift in the phase" of the pulse of energy makes NEXRAD a Doppler radar The phase of the returning signal typically changes based upon the motion of the raindrops (or bugs, dust, etc )
  • Radar - National Weather Service
    Doppler radar sends the energy in pulses and listens for any returned signal The concept of RAdio Detection and Ranging (Radar)began in the late 1800’s and by World War II, radar was in use by militaries around the world, scanning for incoming airplanes
  • Radar - Doppler, Weather, Detection | Britannica
    A major improvement in the capability of weather radar came about when engineers developed new radars that could measure the Doppler frequency shift in addition to the magnitude of the echo signal reflected from precipitation
  • Doppler radars - Wikiwand
    From Wikipedia, the free encyclopedia Wikiwand ️ Wikipedia
  • How Does Weather Radar Work? Doppler Radar Explained
    Doppler radar works a little bit differently from older radars Instead of merely just measuring the reflectivity of precipitation, it also detects the shape, position, and form as well
  • How radar works - National Oceanic and Atmospheric Administration
    In addition to range information, the WSR-88D is a Doppler radar, meaning that it can determine velocity of a target When the radar transmits a pulse, it keeps track of the phase and amplitude (shape, position, and form) of that pulse
  • How Do Radars Work? | Earth Observing Laboratory
    Doppler radar is a specific type of radar that uses the Doppler effect to gather velocity data from the particles that are being measured For example, a Doppler radar transmits a signal that gets reflected off raindrops within a storm





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