Coherent radar

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coherent radar

A type of radar that extracts additional information about a target through measurement of the phase of echoes from a sequence of pulses (or an extended observation interval, as in an FM–CW radar).

The phase information may be used to improve the signal-to-noise ratio (
see coherent integration), to estimate the velocity of the target through the Doppler effect (
see Doppler radar), or to resolve the location of the target in a synthetic aperture radar.

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