Doppler radar

American  

noun

Electronics.

1. a radar tracking system that determines the velocity of a moving object by measuring the Doppler shift of the frequency of a radar signal reflected by the object.

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Doppler radar Scientific  

1. Radar that uses the Doppler effect to measure velocity.

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Etymology

Origin of Doppler radar

First recorded in 1955–60

Example Sentences

Their Earthcare satellite used a Doppler radar to capture the view.

From BBC

It also carries the first space-based Doppler radar to track the motions of clouds and probe how they fuel storms.

From Science Magazine

Operating in an era before Doppler radar and high-speed super computers, Allied meteorologists had to rely on hand-drawn maps, historical data, and spotty weather observations to put together their forecasts.

From Seattle Times

Next door at the Rainbow Bridge Market, cashier Amy Allen, 42, said she wondered whether the earthquake was caused by a Doppler radar tower on top of a mountain east of town.

From Los Angeles Times

Matthew Cappucci, a meteorologist, said on Twitter that the smoke plume reached “about 3,600 feet high,” according to the National Weather Service Doppler radar.

From New York Times