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The Doppler radar works by measuring the ________ of the reflected radio wave.

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The Doppler radar works by measuring the ________ of the reflected radio wave.

(a) Intensity

(b) Frequency

(c) Doppler amplitude

(d) Doppler shift

I have been asked this question during an online interview.

Origin of the question is Doppler Radar in chapter Celestial Navigation, Doppler and Altimeter Radars of Avionics

1 Answer

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Right choice is (d) Doppler shift

To elaborate: the velocity is determined by measuring the Doppler shift of microwave transmitted from the aircraft in several narrow beams pointed toward the surface at relatively steep angles, backscattered by the surface and received by the Doppler radar receiver.

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