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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

program cost categories

Military; Missile defense

1. Research, Development, Test, and Evaluation. Appropriations to fund the efforts performed by contractors and government activities , including procurement of end items, weapons, materiel, ...

system-critical function

Military; Missile defense

A function that is necessary for the successful accomplishment of the system's mission.

multiple reentry vehicle

Military; Missile defense

A reentry vehicle of a delivery system which places more than one reentry vehicle over an individual target.

pre-launch survivability

Military; Missile defense

The probability that a delivery and/or launch vehicle will survive an enemy attack under an established condition of warning.

ground entry point (GEP)

Military; Missile defense

OBSOLETE. GEPs provide the communications interfaces between the SDS space orbital/sub-orbital elements and the C2E. See IFICS.

electromagnetic spectrum

Military; Missile defense

The range of frequencies of electromagnetic radiation from zero to infinity. It is divided into 26 alphabetically designated bands.

second strike capability

Military; Missile defense

The ability to survive a first strike with sufficient resources to deliver an effective counterblow (generally associated with nuclear weapons).

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