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leakage is “budgeted” among individual BMD phases and functions.
Leakage (Max) The maximum allowable threat objects passing through a BMD system expressed
as a percentage of the design-to threat. To ensure overall system performance,
permitted leakage is “budgeted” among individual BMD phases and functions.
LEAP Lightweight Exoatmospheric Projectile.
LEASAT Leased Satellite.
Least Privilege This principle requires that each subject in a system be granted the most
restrictive set of privileges (or lowest clearance) needed for the performance of
authorized tasks. The application of this privilege limits the damage that can
result from accident, error, or unauthorized use.
LED (1) Low Endoatmospheric Defense. (2) Light Emitting Diode.
LEDI Low Endoatmospheric Defense Interceptor.
LEDS (1) Low Endoatmospheric Defense System.
(2) Link Eleven Display System (USN term).
LEI Low Endoatmospheric Interceptor.
LEIP Link Eleven Improvement Program (USN term).
LEL Low Energy Laser.
LELWS Low Energy Laser Weapon System.
LEM Logistics Element Manager (ILS term).
LEO Low Earth Orbit.
LETS LWIR Environment and Threat Simulation.
Level of Effort
(LOE)
Effort of a general or supportive nature that does not produce definite end
products or results, e.g. contract man-hours.
Leverage (1) The advantage gained by boost-phase intercept, when a single booster
kill may eliminate many RVs and decoys before they are deployed. This
could provide a favorable cost-exchange ratio for the defense and would
reduce stress on later tiers of the SDS.
(2) In general, the power to act or influence to attain goals.
LF (1) Landing Force. (2) Low Frequency.
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LFIE Live Flight Integration Exercise.
LFOV Limited Field of View.
LFS Loral Federal System, Gaithersburg, MD.
LFT&E Live Fire Test and Evaluation.
LGB Laser Guided Bomb.
LGM (1) Laser Guided Missile.
(2) Loop Group Multiplexer.
LGSM Light Ground Station Module (USA CECOM term).
LHO Amphibious Assault Ship.
Li Lithium.
LIC Low Intensity Conflict.
LIDAR Light Detection and Ranging.
Life Cycle (1) The total phases through which an item passes from the time it is initially
developed until the time it is either consumed or disposed of as being
excess to all known materiel requirements.
(2) (Software). All the states a software or software related product passes
through from its inception until it is no longer useful.
Life-Cycle Cost
(LCC)
The total cost to the Government of acquisition and ownership of that system
over its useful life. It includes the cost of development, acquisition, support and,
where applicable, disposal.
Life-Cycle
Management
Process for administering an automated information system or hardware support
system over its whole life, with emphasis on strengthening early decisions which
shape costs and utility.
Life-Cycle Model A framework containing the processes, activities, and tasks involved in the
development, operation, and support of the system, spanning the life of the
system from the definition of its requirements to the termination of its use.
Life Cycle of a
Weapon System
All phases of the system's life including research, development, test and
evaluation, production, deployment (inventory), operations and support, and
disposal.
Life Jacket The life support storage container for a Brilliant Pebbles singlet. The life jacket
contains subsystems that perform power, communications, and environmental
protection functions.
Light Detection
and Ranging
(LIDAR)
A precision probing instrument used to measure concentrations of different
gasses or particulates in a given amount of atmosphere.
Light Replicas
(LREP)
Decoys that, by virtue of shape, closely approximate an RV’s signature with little
off-load penalty.
LIMIDIS Limited Distribution.
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Limited Attack An attack on the U.S. and its allies, which provides a stressing timeline, and is
geographically distinct. Not an all-out attack or mass wave.
Limited Defense
System (LDS)
The development of systems, components, and architectures for a deployable
anti-ballistic missile system (as described in section 232(a)(1) of the 1991 Missile
Defense Act, as revised) capable of providing a highly effective defense of the
United States against limited ballistic missile threats, including accidental or
unauthorized launches or Third World attacks, but below a threshold that would
bring into question strategic stability.
Limited
Operational
　
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