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Electronics
Intelligence
(ELINT)
Technical and geo-location intelligence derived from foreign non-communications
electromagnetic radiations emanating from other than nuclear detonations or
radioactive sources.
Electronics
Security (ELSEC)
The protection resulting from all measures designed to deny unauthorized
persons information of value that might be derived from their interception and
study of non-communications electromagnetic radiations, e.g. radar.
Electro-Optics
Infrared (EO/IR)
Technologies/techniques employed by optical sensors in the wavelength
spectrum slightly longer than visible but shorter than radio.
MDA GLOSSARY, VER. 4.0 E
92
Element A complete, integrated set of components capable of autonomously providing
BMDS capability.
Element
Capability
Specification
(ECS)
A document that identifies the element-level BMDS capabilities and
specifications necessary to achieve the system capabilities identified in the SCS.
The ECS further defines the SCS-apportioned mission/technical performance
capabilities and allocates these capabilities to the element’s components.
Element Control
Directives (ECDs)
The command and control data instructions to control the conduct of the
engagement. ECDs are developed by command and control software based
upon variable parameter input by the operators (both pre-planned and real time),
and operator defined rule sets embedded in the software. The individual battle
management processors use these instructions to accomplish the assigned tasks
from the operations order. ECDs are contained within a Task and represent the
form of parameter values that influence the resource management processes of
Weapon Target Assignment (WTA), Sensor Resource Management (SRM), and
Communications Management (CM). There will be numerous ECDs per Task.
Element
Operations
Center (EOC)
An Air Force operations center, which operates and maintains a BMD weapon or
sensor suite. (USSPACECOM)
ELF Extremely Low Frequency.
ELIAS Earth Limb Infrared Atomic Structure.
ELINFOSEC Electronic Information Security.
ELINT Electronics Intelligence.
ELPRS Enhanced Position Location Reporting System.
ELS Earth Limb Sensor.
ELSEC Electronics Security.
ELSI Enhanced Longwave Spectrometer Imager.
ELV Expendable Launch Vehicle.
Emanations
Security
(EMSEC)
The protection that results from all measures designed to deny unauthorized
persons information of value that might be derived from intercept and analysis of
compromising emanations.
EMC (1) Electromagnetic Compatibility. (2) Early Midcourse.
EMCON Emission Control
EMD Engineering and Manufacturing Development (previously referred to as FSD).
EMDCT Expanded Memory DCT.
EME Electromagnetic Environment.
MDA GLOSSARY, VER. 4.0 E
93
Emergency
Capability
(replaces
Contingency
Capability)
BMDS elements or components that are still in development or testing that
provide limited ballistic missile defense capabilities. MDA, working with the
Services, will develop plans, which cover the potential use of prototypes and test
assets for contingency deployment should the SECDEF determine that an
emerging BMD threat requires emergency fielding of a BMDS capability.
EMF Electromagnetic Field.
EMG Electromagnetic Gun.
EMI Electromagnetic Interference.
EMIP See Exoatmospheric Midcourse Interceptor Program.
Emission Control
(EMCON)
The selective and controlled use of electromagnetic, acoustic, or other emitters
to optimize command and control capabilities while minimizing: a) detection by
enemy sensors, and b) mutual interference among friendly systems. EMCON
can also be involved in military deception plans. Also called EMCON.
EML Electromagnetic Launcher. A device used to launch hypervelocity particles.
EMP Electromagnetic Pulse.
EMPSKD Employment Scheduling (USN term).
EMR Electromagnetic Radiation.
EMRLD Excimer Moderate Power Raman-Shifted Laser Device.
EMSEC Emanations Security.
EMSP Enhanced Modular Signal Processor.
EMT Engineering Management Team.
EMV Electromagnetic Vulnerability.
ENA Engineering: Architecture and Analysis.
ENCATT Engineer CATT (US Army term).
Enclave Isolated resource – an SDS asset that has lost connectivity with other SDS
assets with which it normally has connectivity, but is still capable of coordinating
with SDS assets to conduct ballistic missile defense. Various combinations of
connectivity losses are possible; for example, (1) an operations center has lost
connectivity with Higher Authority, yet can still provide sufficient C2 and can still
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