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optical resonator to a higher energy level, and the resonator forces the excited
atoms to radiate in phase. Derived from Light Amplification by Stimulated
Emission of Radiation and classified from Class I - Class IV according to its
potential for causing damage to the eye.
Laser Designator A device that emits a beam of laser energy to mark a specific place or object.
Laser Detection
and Ranging
(LADAR)
A technique analogous to radar, but which uses laser light rather than radio or
microwaves. The light is bounced off a target and then detected, with the return
beam providing information on the distance and velocity of the target.
Laser Guided
Weapon
A weapon that uses a seeker to detect laser energy reflected from a laser
marker/designated target and, through signal processing, provides guidance
commands to a control system. The control system then guides the weapon to
the point from which the laser energy is being reflected.
Laser Imaging
Radar
A technology whereby a laser beam can be used in a way similar to the use of a
radar beam to produce a high-quality image of an object.
Laser Optics Technology associated with the use and control of laser beams with flux greater
than 1 watt/cm2.
Laser Seeker A device based on a direction sensitive receiver that detects the energy reflected
from a laser designated target and defines the direction of the target relative to
the receiver. See also laser guided weapon.
Laser Target
Designating
System
A system that is used to direct (aim or point) laser energy at a target. The
system consists of the laser designator or laser target marker with its display and
control components necessary to acquire the target and direct the beam of the
laser energy thereon.
Laser Tracker A device that locks on to the reflected energy from a laser marked/designated
and defines the direction of the target relative to itself.
Laser Weapons Devices, such as photon generators, which produce a narrow beam of coherent
radiated power greater than 1 MW.
LASERCOM Laser Communications.
LATS Long Wave Infrared Advanced Technology Seeker/Sensor.
MDA GLOSSARY, VER. 4.0 L
163
Launch Azimuth Missile launch location measured in degrees clockwise from the local northpointing
longitude line at the launch site. (USSPACECOM)
Launch Detection Initial indication by any one of a variety of sensors that a booster has been
launched from some point on the surface of the earth, with initial characterization
of the booster type. (USSPACECOM)
Launch Point
Determination
With computer methods, uses missile track observation to estimate the point on
the earth’s surface from which the missile was launched, expressed in terms of
circular error probable.
Launch Under
Attack (LUA)
Execution by National Command Authorities of Single Integrated Operational
Plan forces subsequent to tactical warning of strategic nuclear attack against the
United States and prior to first impact.
Launch
Verification
Confirmation of a detection of a booster launch by receiving a report from a
sensor separate and independent of the sensor that initially detected a specific
booster launch.
Layered Defense A defense that consists of several sets of weapons that operates at different
phases in the trajectory of a ballistic missile. Thus, there could be a first layer
(e.g., boost phase) of defense with remaining targets passed on to succeeding
layers (e.g., midcourse, terminal).
lb Pound.
LBL Lawrence Berkeley Laboratory, Berkeley, CA.
LBM Localized Battle Management/Manager(s).
LBTS Land Based Test Site.
LCC (1) See Life-Cycle Cost. (2) Launch Control Center.
LCCE (1) Life-Cycle Cost. (2) Launch Control Center. (3) Land Component
Commander (JCS term).
LCCS Life-Cycle Contractor Support.
LCF Launch Control Facility.
LCM (1) Life Cycle Management.
(2) Lightweight Communications Module (USAF TelComms/Computer term).
LCN Logistics Control Number (ILS term).
LCOM Logistics Composite Model.
LCN Logistics Control Number (ILS term).
LCS Laser Crosslink System.
LDC Less Developed Country.
LDS (1) Layered Defense System. (2) Lexington Discrimination System. (3) Limited
Defense System.
MDA GLOSSARY, VER. 4.0 L
164
LE Lethality Enhancer (PAC-3).
Lead Component/
Service
The DoD Component designated by SECDEF to be responsible for management
of a system acquisition involving two or more DoD Components in a joint
program.
LEAF Law Enforcement Access Field.
Leakage The allowable threat objects passing through a BMD system expressed as a
percentage of the threat. To ensure overall system performance, permitted
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