corner reflector

corner reflector
i. A passive ECM (electronic countermeasure) device, normally consisting of three metallic surfaces or screens perpendicular to one another. It is designed to act as a radar target or marker by producing a very strong radar echo. The returned echo by the reflector stands out and thus confuses the radar operator.
ii. A device for producing antenna gain at very high frequencies and above. It consists of two flat metal sheets or screens, which are placed behind the radiating element of the antenna to produce forward gain. The gain is the same for reception as for transmission at the same frequency. Corner-reflector antennae are often used for reception of television broadcast signals in the UHF (ultrahigh frequency) band.
iii. In radar interpretation, an object that, by means of multiple reflections from smooth surfaces, produces a radar return of greater magnitude than might be expected from the physical size of the object.

Aviation dictionary. 2014.

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Look at other dictionaries:

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