FM–CW radar

From Glossary of Meteorology
(Frequency-modulated, continuous-wave radar.) A radar that transmits a waveform that is continuously and regularly modulated in frequency, typically using a linear sweep or sawtooth wave for the frequency modulation.

In such a radar the range to a target is determined by the frequency of the signal it returns. Extremely high range resolution can be achieved by measuring the returned signal in narrow frequency bands.

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