Doppler radar

From Glossary of Meteorology
A radar that detects and interprets the Doppler effect in terms of the radial velocity of a target.

The signal received by a 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.
See Doppler frequency shift.

(Coined word for radio detection and ranging.) An electronic instrument used for the detection and ranging of distant objects of such composition that they scatter or reflect radio energy.

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