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Missile defense

Measures designed to detect, identify, track, and defeat attacking (ballistic) missiles in both strategic and theater tactical roles, during any portion of their flight trajectory (boost, post-boost, midcourse, or terminal) or to nullify or reduce the effectiveness of such attack.

Contributors in Missile defense

Missile defense

space power

Military; Missile defense

Generation and control of electrical energy in space, from various originating sources (e.g., nuclear, chemical, solar).

selectivity

Military; Missile defense

Refers to choosing a subset of targets either for attack or defense. (See Preferential Defense and Preferential Offense.)

boost phase

Military; Missile defense

That portion of the flight of a ballistic missile or space vehicle during which the booster and sustainer engines operate.

collocation

Military; Missile defense

The physical placement of two or more detachments, units, organizations, or facilities at a specifically defined location.

ground zero

Military; Missile defense

The point on the surface of the earth at, or vertically below or above, the center of a planned or actual nuclear detonation.

focal plane

Military; Missile defense

The plane, perpendicular to the optical axis of the lens, in which images of points in the object field of the lens are focused.

air defense

Military; Missile defense

All measures designed to nullify or reduce the effectiveness of hostile air action. See also active air defense, passive air defense.

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