circular error probable

(redirected from Circle of equal probability)
Also found in: Acronyms, Encyclopedia.

circular error probable

An indicator of the delivery accuracy of a weapon system, used as a factor in determining probable damage to a target. It is the radius of a circle within which half of a missile's projectiles are expected to fall. Also called CEP. See also delivery error; deviation; dispersion error; horizontal error.
References in periodicals archive ?
Once fielded, it will reduce the risk of collateral damage by increasing accuracy to a 10-meter circle of equal probability or less.