A type of radar that "sees" rain and snow and measures wind speed and direction. It is most useful for short-range forecasts on the day of the weather event.
radar unit that, in the velocity mode, determines the radial movement of airborne hydrometeor or aerosol targets either to or from the unit; based upon the Doppler Effect or Shift, where a slight change in the frequency (or phase) between the broadcast and reflected microwave radiation signal occurs because the target is moving toward or away from the radar antenna. Precipitation location and intensity are determined also by Doppler radar when operated in a reflectivity mode.
a sophisticated type of radar that relies on the Doppler effect - the change in frequency of waves emitted from a moving source - to determine wind speed and direction, as well as the direction in which precipitation is moving.
A type of radar that is able to detect motion directly.
A radar system that uses the Doppler effect to measure presence and velocity of a target. The commercial Doppler systems, such as police radars and intrusion alarms, usually operate with a "zero IF" because the transmitter source (Gunn oscillator) is also used as the local oscillator for the mixer. Using this technique, the frequency of the IF signal is the Doppler shift frequency. For example, if the transmitter frequency is 10.525 GHz, a vehicle traveling at 50 mph will cause a Doppler shift of 1568 Hz.
radar that determines the intensity of rainfall and velocities of water and air particles; the National Weather Service uses a type of Doppler Radar called the WSR-88D, or NEXRAD; velocities of detected targets are determined by Doppler shift in frequency.
A weather radar tool that most meteorologists use to measure speed and direction of a moving object.
Radar used to measure which direction and how fast something is moving, such as the wind.
A radar that determines the velocity of falling precipitation either toward or away from the radar unit.
Radar that measures speed and direction of a moving object, such as wind.
a specialized form of radar used in weather forecasting. Unlike ordinary radar, which can report only the location and strength of precipitation, Doppler radar is also capable of indicating wind direction, wind speed, and boundaries between warm and cold fronts. Doppler radar may also be referred to as WSR 88-D or NEXRAD.
A type of weather radar that determines whether atmospheric motion is toward or away from the radar. It uses the Doppler effect to measure the velocity of particles suspended in the atmosphere.
Weather radar that reads the direction and speed of moving objects (such as drops of precipitation) by determining whether atmospheric motion is horizontally toward or away from the radar
radar system that utilizes the Doppler effect for measuring the radial velocity of the wind (i.e., the motion toward or away from the radar)
Radar that can detect location and intensity of precipitation, and measure radial velocity. Radial velocity is the instantaneous component of motion of precipitation particles parallel to the radar beam (i.e., toward or away from the radar).
Sophisticated radar that can measure the speed and direction of moving objects, such as wind.
A weather radar system that uses the apparent shift in frequency of radio waves (Doppler effect) to discern air motion and accordingly predict tornadoes and precipitation courses very expeditiously, as well as measure the speed and direction of rain and ice.
Radar that can measure radial velocity, the instantaneous component of motion parallel to the radar beam (i.e., toward or away from the radar antenna). Named for J. Christian Doppler, an Austrian physicist, who in 1842 explained why the whistle of an approaching train had a higher pitch than the same whistle when the train was moving away.
radar that detects and interprets the Doppler effect in terms of the radial velocity of a target. The signal received by radar from a moving target differs in frequency from the transmitted frequency by an amount that is proportional to the radial component of the velocity relative to the radar gun. Example of Doppler Radar - Decatur Police Radar Guns. A lot of sports radar guns, such as Bushnell Velocity Speed Gun, are Doppler Radars as well.
Radar that indicates radial (toward or away from the radar) wind speed as well as precipitation echoes; coherent radar.
Radar that can measure radial velocity, the instantaneous component of motion parallel to the radar beam (i.e., toward or away from the radar antenna). Doppler radar is used by Belgocontrol (radar station at Melsbroek) for aviation safety purpose, and by KMI/IRM (radar station at Wideumont) for general forecast purpose.
RADAR which detects motion towards or away from the set by measuring the change in frequency between outgoing and reflected signals.
Weather radar that measures direction and speed of a moving object, such as drops of precipitation, by determining whether atmospheric motion is horizontally toward or away from the radar. Using the Doppler effect, it measures the velocity of particles. Named for J. Christian Doppler, an Austrian physicist, who in 1842 explained why the whistle of an approaching train had a higher pitch than the same whistle when the train was going away.
A type of radar which utilizes the return signal's frequency shift to determine an object's velocity.
Doppler radar uses the Doppler effect to measure the radial velocity of targets in the antenna's directional beam. The Doppler effect shifts the received frequency up or down based on the radial velocity of target (closing or opening) in the beam, allowing for the direct and highly accurate measurement of target velocity.