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MCT Mercury Cadmium Telluride (cf. HgCdTe).
MCTE Mission, Course of Action, Task, and Element Control Directives.
MCTL Militarily Critical Technologies List.
MCTR Missile Control Technology Regime.
MCV Mission Capable Vehicle.
MD Missile Defense.
MDA (1) Missile Defense Agency. (2) Missile Defense Act. (3) Milestone Decision
Authority. (4) McDonnell-Douglas Aerospace.
MDAHWG Missile Defense Ad Hoc Working Group.
MDAP Major Defense Acquisition Program.
MDART Missile Defense Activities Review Team.
MDBIC Missile Defense Barrel Integration Center.
MDC Midcourse Data Center, Advanced Research Center, Huntsville, AL.
MDCI Multi-Discipline Counterintelligence.
MDDC Missile Defense Data Center, USASSDC, Huntsville, AL.
MDP Manufacturing Data Package.
MDR (1) Medium Data Rate (TelComms/Computer term).
(2) Milestone Decision Review.
(3) Multi-national Defense Research.
MDSC Missile Defense Scientific and Technical Information Center.
MDSTC Missile Defense and Space Technology Center.
MDT Maintenance Down Time.
MDTD Mean Downtime Documentation (ILS term).
MDTOA Mean Downtime for Outside Assistance (ILS term).
MDA GLOSSARY, VER. 4.0 M
179
MDTOR Mean Downtime for Other Reasons (ILS term).
MDTT Mean Downtime for Training (ILS term).
MDW Mass Destruction Weapons.
ME/VA Mission Essential/Vulnerable Area
MEA Mission Effectiveness Analysis (JFACC term).
MEADS See Medium Extended Air Defense System.
Mean Time
Between Failures
(MTBF)
A measure of the reliability of an item. Defined as the total functioning life of an
item divided by the total number of failures within the population during the
measurement interval. The definition holds for time, rounds, miles, events, or
other measures of unit life. MTBF is a basic measure of reliability.
Mean Time To
Repair (MTTR)
The total elapsed time for corrective maintenance divided by the total number of
corrective maintenance actions during a given period of time. A basic measure
of maintainability.
Mean Time to
Restore System
(MTTRS)
A measure of the system maintainability parameter related to availability and
readiness. The total corrective maintenance time associated with downing
events, divided by the total number of downing events, during a stated period of
time. (Excludes time for off-system maintenance and repair of detached
components.)
MEASAT Malaysia East Asia Satellite.
Measure of
Effectiveness
(MOE)
The quantitative expression (sometimes modified by subjective judgment) of the
success of a system in achieving a specified objective.
MEC Mission Essentially Code (ILS term).
Medium Earth
Orbit (MEO)
Space vehicles characterized by orbits between 400 and 10,000 nautical miles,
longer duration revolution (2 to 12 hours), longer visibility envelopes (10 minutes
up to approximately 1 hour), and generally longer lifetimes. This region contains
the Van Allen radiation belts where electronic components need special
protection.
Medium
Extended Air
Defense System
(MEADS)
A lightweight, highly transportable, low-to-medium altitude air defense and
theater missile defense system designed to protect critical fixed and
maneuverable corps assets. MEADS superseded the Corps SAM program in
1995.
Medium Power
Lasers
Lasers that radiate power less than 1 MW, normally used to detect, identify,
track, and designate a target vehicle.
Medium Range
Ballistic Missile
(MRBM)
A ballistic missile with a range from about 600 to 1,500 nautical miles.
Medium
Wavelength
Infrared (MWIR)
Thermal radiation emitted by a source in the electromagnetic spectrum
encompassing infrared wavelengths of 3 to 6 microns.
MDA GLOSSARY, VER. 4.0 M
180
MEF Marine Expeditionary Force.
MEILSR Minimum Essential ILS Requirements (NSA term).
MEL (1) Maintenance Expenditure Limit. (2) Mobile Erector Launcher.
MEM (1) Mission Effectiveness Model. (2) Mission Equipment Modernization.
Memorandum of
Agreement (MOA)
(1) In contract administration, an agreement between a program manager
and a Contract Administration Office, establishing the scope of
responsibility of the Contract Administration Office with respect to the
cost and schedule surveillance functions and objectives, and/or other
contract administration functions on a specific contract or program.
(2) Any written agreement in principle as to how a program will be
administered.
Memorandum of
Understanding
(MOU)
Official agreements concluded between the NATO countries' defense ministries
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