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to provide data leading to the decision to enter full-scale development.
Early Warning (1) Early detection of an enemy ballistic missile launch, usually by means of
surveillance satellites and long range radar.
(2) Early notification of the launch or approach of unknown weapons or
weapon carriers.
Earth Limb The apparent outer edge of the earth as viewed from space.
Eastern Test
Range (ETR)
Beginning at Patrick AFB, FL, this range stretches halfway around the globe
where it meets the Western Test Range. An array of launch complexes, sensors,
and tracking sites make up the Eastern Test Range. The ETR is now operated
by AFSPACECOM as shown in WTR definition.
MDA GLOSSARY, VER. 4.0 E
88
EB (1) Electron Beam. (2) Enhanced Blast.
EBB Electronic Bulletin Board.
EBCDIC Extended Binary Code Decimal Interchange Code.
EBW Electron Beam Welding.
EC (1) Electronic Combat.
(2) Error Control.
(3) OBSOLETE. European Community. Now known as the European Union
(EU).
EC/EDI Electronic Commerce/Electronic Data Interchange
ECAC Electromagnetic Compatibility Analysis Center.
ECB Engineering Change Board.
ECC (1) Equipment Control Center. (2) Element Control Center (USAF term).
ECCM Electronic Counter-Countermeasures.
ECDs Element Control Directives.
ECLS ERINT Command and Launch System.
ECM Electronic Countermeasures.
ECN Engineering Change Notice.
ECO Engagement Control Orders.
ECP (1) Engineering Change Proposal. (2) Emergency Command Precedence.
ECPMO Electronic Commerce Program Management Office.
ECS Engagement Control Station (PATRIOT).
ECU Environmental Control Unit.
EDAC Error Detection and Correction
EDGES Electronic Data/Guidelines for Element Survivability.
EDL Electrical Discharge Laser
EDM Engineering Development Model.
EDP Engineering Development Process
EDR Embedded Data Recorder (PATRIOT).
EDS Electronic Data Systems Corporation
EDWA Engagement Determination and Weapons Assignment (PATRIOT).
MDA GLOSSARY, VER. 4.0 E
89
EDX Exoatmospheric Discrimination Experiment
EE (1) Electrical Engineering. (2) Engineering Estimate.
EED Electro-Explosive Device.
EEEV End-to-End Experimental Version.
EEFI Essential Elements of Friendly Information.
EEI Essential Elements of Information.
EEIC Element of Expense Investment Code.
EELV Evolved Expendable Launch Vehicle (USAF term)
EEU Electronic Equipment Unit.
EFEX Endo-Aeromechanics Flight Experiment.
EFF Electronic Frontier Foundation.
Effectivity A designation given to the BMDS configuration and demonstrated capability at
a point in time, becoming effective at each increment when an element or
component is inserted into a particular Block.
Effective Damage That damage necessary to render a target element inoperative, unserviceable,
nonproductive, or uninhabitable.
Effluent Plume The pathway of movement of effluents through surface water or air.
EFP Explosively Formed Projectile.
EGP End Game Processor.
EGTR Eglin [AFB] Gulf Test Range.
EHC Enhance Hit Capability (USN term, related to SM2 Block IVA).
EHF Extremely High Frequency.
ehp Equivalent Horsepower.
EIA (1) Environmental Impact Assessment.
(2) Electronic Industries Association.
EIAP Environmental Impact Analysis Process.
EIP Exoatmospheric Interceptor Propulsion.
EIPC Electronic Information Privacy Center.
EIPT (1) Element IPT. (2) Engineering IPT.
EIS (1) Environmental Impact Statement. (2) Explosive Initiation System.
EISA Extended Industry Standard Architecture (Telecomm/Computer term).
MDA GLOSSARY, VER. 4.0 E
90
EKV (1) Electromagnetic Kill Vehicle. (2) Exoatmospheric Kill Vehicle.
Elastic Range The stress range in which a material will recover its original form when the force
(or loading) is removed. Elastic deformation refers to dimensional changes
occurring within the elastic range.
Electro-Optics
Infrared (EO/IR)
Technologies/techniques employed by optical sensors in the wavelength
spectrum slightly longer than visible but shorter than radio.
Electromagnetic
Compatibility
(EMC)
A condition when all electromagnetic emissions from electronic, electro-magnetic,
and electro-optical components of a system interact without interfering with one
another.
Electromagnetic
Emanations
Signals transmitted as radiation through the air, through a vacuum, or through
conductors.
Electromagnetic
Field (EMF)
An electric or magnetic field or combination of the two, as in an electromagnetic
wave. Created by electric charges in motion, having both electric and magnetic
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