Anti-clutter gain control

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Alternative term: Swept gain, Gain time control (G.T.C.) (deprecated), Anti-clutter sea, Sensitivity time control (S.T.C.) (U.S.A.)

A device which automatically, and in a predetermined manner, increases the gain of a radar set from a low level to the maximum, within a certain period after each transmitter pulse, so that short range echoes which may be unwanted are amplified less than long range echoes.

Reference: B.S. (modified)

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)