Marine Air Command and Control SystemA US Marine Corps tactical air command and control system that provides the tactical air commander with the means to command, coordinate, and control all…
marine broadcast stationA coast station which makes scheduled broadcasts of time, meteorological, and hydrographic information. [NTIA]
marine utility stationA station in the maritime mobile service consisting of one or more hand-held radiotelephone units licensed under a single authorization.
maritime air communicationsCommunications systems, procedures, operations, and equipment that are used for message traffic between aircraft stations and ship stations in the…
maritime broadcast communications netA communications net that is used for international distress calling, including international lifeboat, lifecraft, and survival-craft high-frequency (HF)…
maritime mobile serviceA mobile service between coast stations and ship stations, or between ship stations, or between associated on-board communication stations; survival craft…
maritime mobile-satellite serviceA mobile-satellite service in which mobile Earth stations are located on board ships; survival craft stations and emergency position-indicating…
maritime radionavigation serviceA radionavigation service intended for the benefit and for the safe operation of ships. [NTIA] [RR]
mark sequenceA string of mark bits (sent immediately before message transmission starts) to alert the customer installation (CI) to initiate certain actions. [T1.
Mark/MarkupLine by line review and approval/disapproval/modification of the defense budget by congressional committees.
markerA diagnostic indication that disease may develop.
marker beaconA transmitter in the aeronautical radionavigation service which radiates vertically a distinctive pattern for providing position information to aircraft.
marker symbolA symbol used to represent a point location such as an airport.
Market ValueThe price that the market - any market - sets at a particular time as the price at which an asset can be bought or sold.
MarkingHuman readable word or phrase acting as an indicator of all or part of the security constraints that apply to a document so marked [CESG]. See also: Label.
marking biasThe uniform lengthening of all marking signal pulse widths at the expense of the pulse widths of all spacing pulses.
maserAcronym for microwave amplification by stimulated emission of radiation. A member of the general class of microwave oscillators based on molecular…
maskIn communications systems, to obscure, hide, or otherwise prevent information from being derived from a signal.
masked thresholdThe level at which an indistinguishable signal of interest becomes distinguishable from other signals or noise.
masking1. In television and video technology, a process in which color signals are used to modify each other for the purpose of altering their color rendition.
masking characterA character that is used to represent optional characters at the front, middle, and end of a search term.
masquerade1. The pretense by an entity to be a different entity in order to gain unauthorized access. [2382-pt.8] 2.
MasqueradingWhen an unauthorized agent claims the identity of another agent it is said to be masquerading.
mass pointIrregularly distributed sample points, each with an x,y location and a z value, which are used as the basic elements to build a tin.
Mass RaidMany Red ballistic missiles launched toward CONUS from several launch areas. A mass ASAT raid consists of several ASATs attacking Blue satellites.
MASTMeasurement and Simulation Technology-formerly Synthetic Scene Generation Model (SSGM).
masterPertaining to microforms, the master is the original film from which duplicates are made.
master clockA device that generates periodic, accurately spaced signals that are used for such purposes as timing, regulation of the operations of a processor, or…
master frequency generatorIn frequency-division multiplexing (FDM), equipment used to provide system end-to-end carrier frequency synchronization and frequency accuracy of tones.
master keyWithin a hierarchy of encrypting keys and transaction keys, the highest level of key-encrypting key. [After X9.24]
master nodeA process running on an Amazon Machine Image that keeps track of the work its core and task nodes complete.
MatchEither an exact or approximate replication. If not an exact replication, the approximate replication shall be so designed as to achieve a suitable…
Match/matchingThe process of comparing biometric information against a previously stored template(s) and scoring the level of similarity.
matched junctionA waveguide component having four or more ports, and so arranged that if all ports except one are terminated in the correct impedance, there will be no…
matched name selection methodThe mechanism used to help a caller differentiate between users with names that match the touch-tone or speech input. [Exchange 2007]
Material Fielding PlanPlan to ensure smooth transition of system from developer to user.
material integritythe original shape, form, context, content, structure and substance of a record in the specific physical property and material form in which it was…
material scatteringOf an electromagnetic wave, scattering that is attributable to the intrinsic properties of the material through which the wave is propagating.
Materials ScienceThe science of developing/altering and applying materials to obtain a resultant molecular structure with desirable physical properties and performance…
MATHSFAManufacturing and Testing of LWIR Hardened Seeker FPA Assemblies. 177
Matra BAE DynamicsEuropean missile manufacturer formed in 1996 from British Aerospace Dynamics and Matra of France.
matrixingThe accomplishment of a color coordinate transformation by computational, electrical, optical, or by other means. [After IEEE 100] [After SMPTE]
MATT RadioUHF radio receiver for TRAP, TOPS, and TIBS.
matteAn image or signal that represents or carries only transparent information that is intended to overlay or control another image or signal. [After SMPTE]
maximal-ratio combinerA diversity combiner in which (a) the signals from each channel are added together, (b) the gain of each channel is made proportional to the rms signal…
Maximum AttritionMaximum attrition is employed in a target-rich environment to destroy the maximum number of RVs, regardless of the type, by using all available or…
maximum block transfer timeThe maximum allowable waiting time between initiation of a block transfer attempt and completion of a successful block transfer.
maximum calling areaGeographic calling limits permitted to a particular access line based on requirements for the particular line.
maximum disengagement timeThe maximum allowable waiting time between initiation of a disengagement attempt and successful disengagement.
maximum keying frequencyIn facsimile systems, the frequency in hertz numerically equal to the spot speed divided by twice the X-dimension of the scanning spot.
maximum usable frequency (MUF)In radio transmission using reflection from the regular ionized layers of the ionosphere, the upper frequency limit that can be used for transmission…
maximum user signaling rateThe maximum rate, in bits per second, at which binary information can be transferred in a given direction between users over the telecommunications system…
Maxwell's equationsA set of partial differential equations that describe and predict the behavior of electromagnetic waves in free space, in dielectrics, and at…
MboneAbbreviation for multicast backbone on the Internet. A part of the Internet designed to support IP multicasting by coordinating the transmission of…