circular error probability
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circular error probability (CEP)
The radius of a circle within which half the missiles or projectiles are expected to fall. It is an indicator of the delivery accuracy of a weapon system, used as a factor in determining probable damage to a target. The CEP is expressed as a distance and a clock code from the desired point of impact. Also called circular probable error.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved