instantaneous automatic gain control


Also found in: Acronyms.

instantaneous automatic gain control

[¦in·stən¦tā·nē·əs ‚ȯd·ə¦mad·ik ′gān kən‚trōl]
(electronics)
Portion of a radar system that automatically adjusts the gain of an amplifier for each pulse to obtain a substantially constant output-pulse peak amplitude with different input-pulse peak amplitudes; the circuit is fast enough to act during the time a pulse is passing through the amplifier.
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