航空缩略语词典

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MDA GLOSSARY, VER. 4.0 T 298 - k7 g. D, V) t) b# ` T/ k, iTheater Missile Defense Council (TMDC) A consultative body for considering TMD family of systems planning and programming issues; chaired by an Assistant to the MDA Deputy for Acquisition/TMD, membership includes MDA TMD Directors, representatives of each applicable Service Program Executive Officer, and TMD Executive Agents 2 E3 }: @8 Z! d) zand Program Managers. Theater High & `' `' S( U2 }3 S# E. t gAltitude Area 2 `# I+ E7 P Z0 L/ gDefense System (THAAD) A ground-based, air transportable interceptor system that will provide wide area defense capability by intercepting longer-range missiles at higher altitudes and at . R) a5 {" x9 r' |greater distances. Will provide an overlay or upper tier to point defenses such as PATRIOT. Theater Missile ) g7 h3 r, J2 P- [2 a8 V(TM) - j7 W b8 B- N. oA theater missile (TM) is a ballistic missile (BM), cruise missile (CM), or air-tosurface guided missile (ASM) whose target is within a theater or which is capable ; ?( N2 s0 ]% }! Y7 Z6 y4 Vof attacking targets in a theater. Theater Missile Defense (TMD) OBSOLETE. The strategies and tactics employed to defend a geographical area / |, s. _1 ~! I$ |# r; x& ooutside the continental United States against attack from short-range, intermediate-range, or medium-range ballistic missiles. Theater Missile ( o# h. V6 r: q0 s3 Z6 R+ w5 xDefense Ground- : F- J5 Q& F0 L/ Q7 GBased Radar 0 Y s" C( p4 m& ~. [3 H(TMD-GBR) + v9 [2 r3 P z0 z* K7 a2 ZA ground-based, air transportable sensor that provides search, tracking and & \" ]& D+ c6 k0 Ldiscrimination capabilities for the THAAD interceptor system. Also referred to as 6 s0 m2 g; ?) R4 `0 {THAAD Radar. . a# | m, r) e. @1 XTheater Missile ; t O1 w# Q8 K& ?: HDefense Initiative (TMDI) An initiative under which all DoD theater and tactical missile defense activities are carried out. Section 231 of the National Defense Act for Fiscal Year 1993 3 E; N( P0 q. g: H7 l0 p(Public Law 102–484) directed establishment of a TMDI office within the DoD. THEL Tactical High Energy Laser. Thermal Energy Electromagnetic energy emitted as thermal radiation. The total amount of 6 e- t1 ]* Q! v' F- d: ]thermal energy received per unit area at a specified distance is generally 5 P( Y+ ^9 M* u1 rexpressed in terms of calories per square centimeter. 5 e8 F6 \7 E) @- {: KThermal Imagery Imagery produced by sensing and recording the thermal energy emitted or reflected from the objects, which are imaged. Thermal Kill The destruction of a target by heating it, using directed energy, to the degree + t5 E$ u" j* b; Othat structural components fail. ! C y% B, S( aThermal - ~$ |4 ~/ H' @$ }( y2 u) tManagement , P9 E% K1 R/ j. |Technologies/techniques associated with the control and management of thermal energy, its generation, dissipation, and recovery. Thermal ' \" h; T2 C; Y& X3 xRadiation Electromagnetic radiation emitted (in two pulses from a nuclear air burst) from the fireball as a consequence of its very high temperature; it consists essentially of $ Y4 W1 a8 J: N# v( A& {ultraviolet, visible, and infrared radiations. 0 j2 y1 p4 }/ J1 F& F+ gThermal X-Rays The electromagnetic radiation, mainly in the soft (low energy) x-ray region, 3 S# Q# q* I. y; n' \8 G4 Pemitted by the nuclear weapon residue by virtue of its extremely high temperature; it also is referred to as the primary thermal radiation. It is the - E( J' G* E1 A/ A1 \$ Z# dabsorption of this radiation by the ambient medium, accompanied by an increase in temperature, which results in the formation of the fireball (or other heated region) which then emits thermal radiation. (See X-Rays.) \7 \0 u* f& MMDA GLOSSARY, VER. 4.0 T * ~* e2 z$ |: M% ^! B/ q9 s299 % \' x8 J5 q! \$ mThermosphere The atmospheric shell extending from the top of the mesosphere to outer space; 2 l0 i$ F, ?) y) d& r, kit is a region of more or less steadily increasing temperature with height, starting at 40 to 50 miles (70 to 80 kilometers); the thermosphere includes, therefore, the * u* J& ]8 e: a% N: texosphere and most or all of the ionosphere. % ?& ]! G8 ?8 v/ j$ |! T( @" mThreat Characterization 6 d; ?$ s8 q; |: @" ]An assessment of the nature, magnitude and intent of an attack in progress. 6 a. A9 {' X8 x2 eThreat Corridor ) J- s2 s4 a. ?+ R: y3 u3 ~% O(Threat Tube) 5 Y" }$ o1 R- B# @# I$ wA tube containing all the objects originating from launch sites and aimed at targets whose spacing is close enough to permit the tube around the object trajectories to be represented by a single trajectory in battle management computation. Threat Scenario A hypothetical example of the employment of threat systems against ballistic , Q$ u5 h0 ^6 v8 Tmissile defenses for the purpose of analysis and evaluation of those defensive systems and architectures. 4 o D/ Q8 B' [Threshold Performance capability or characteristic level in terms of a minimum acceptable 9 U4 C) q' i2 M. A* Wvalue (threshold) required to satisfy the mission need and a performance objective. Threshold " v- @3 _* G% J2 N. nDefense A defense strategy that concedes that the target can be destroyed at a price that is not prohibitive, but the presence of the defense is thought to require the offense to mount a relatively large and complex attack. Throw Weight All weight in an interceptor, above the sustainer, which serves as the kill vehicle. Thrusted 7 G* S! p8 t0 B4 I: G7 V( P7 z; L& zReplicas (TREPS) Conical decoys equipped with a miniature rocket device. Generally used to * |" m; L; u1 _6 tchange the decoy’s optical signature to resemble that of an RV in the reentry phase. TI (1) Technical Instruction. (2) Technology Insertion. TIARA Tactical Intelligence and Related Activities. " M N7 Z& E5 d* |. L* f6 kTIBS (1) Theater Information Broadcast Service. / V; q- [0 v- ]' S' S! l(2) Tactical Information Broadcast System. ( Z# K3 K6 l/ L(3) Theater Intelligence Broadcast System. ; J: S$ Y0 J# R2 r) iTIC (1) Thermionic Integrated Circuit. (2) Technical Information Center. TIDP Technical Interface Design Plan. TIE (1) Technology Integration Experiments. (2) Technical Independent Evaluation. ' F/ e- e- I' b0 n' H8 Z! uTier An integrated set of SDS elements that address a particular phase of the threat * N$ @% ^: C/ p0 w$ {9 y |) t(e.g., boost phase). 0 s9 `6 r: ^5 ]/ m# RTiered Defenses The use of defensive systems at different phases of the missile trajectory. TIES Technology Integration Equipment System. , V/ }9 c' f: VTIIAP Telecommunications and Information Infrastructure Assistance Program. % l) V, T4 h2 t$ Z# ^TIL Technical Insertion Laboratory. " R7 ~# b3 l# b7 K3 b4 M, T9 }1 ~% eTIM Technical Interchange Meeting. , |( }+ x7 o. _/ N7 [$ |5 NMDA GLOSSARY, VER. 4.0 T / O% l+ I& `; p- ^300 # t: y/ _; R/ c2 lTime-Phased # g/ o5 T3 W# x& J. T2 SForce and " E' \& z; F/ b: }1 _" ~Deployment List Appendix 1 to Annex A of the operation plan. It identifies types and/or actual units required to support the operation plan and indicates origin and ports of 9 d0 v, Q0 \* Z9 H6 h& Y3 Ddebarkation or ocean area. - Z, A j+ i4 z# m; u4 b9 t2 vTime of Flight (Max) The maximum time for a booster or vehicle to perform its function from time of launch. ) F( t, ^& j5 e# w6 BTime on Station The time the sensor is in its operating position. Time Sensitive Targets Those target requiring immediate response because they pose (or will soon - h6 I8 |2 l% M1 D1 wpose) a clear and present danger to friendly forces or are highly lucrative, ) K1 _0 o3 X# r( c% wfleeting targets of opportunity.

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Time to Station The time required to move a sensor to its operating position. TIMS Training Integration Management System (USAF term). TIN Theater Intelligence Networks. TIP TOPAZ International Program. TIR OBSOLETE. Terminal Imaging Radar. (Predecessor to Ground-Based Radar Terminal (GBRT).) TIRS Telemetry, Instrumentation and Range Safety ' |/ o# K6 A( G g% z' E [TIS (1) Trusted Information Systems, Inc. (2) Technical Information System. 7 x8 v8 P# x1 } V3 Y+ i' WTitan USICBM. TIU TIBS/Tactical Interface Unit. TIWG Test Integration Working Group. (U.S. Army) 7 r0 {# v& J9 l& V1 ATL Team Leader. 5 `. c) D; h3 Z6 v, L- GTLA Time Line Analysis. TLAM Theater land Attack Missile. 6 i1 v3 T- c9 NTLAM/D TLAN [with submunition] Dispenser (Navy term). TLDD Top Level Design Document. : h. D& ^9 k- U. f! @- DTLV Target Launch Vehicle. ( w0 x. }# I- O$ g$ L( |2 NTLX Teletype. 4 X; R, B. o3 m. L e- JTM (1) See Theater Missile. (2) Technical Manual. (3) Tactical Missile (US Army term). 8 d+ b% U! S0 k! Z4 D" ?8 CTMCC Test Monitor and Control Center. TMD See Theater Missile Defense. TMD C2 Theater Missile Defense Command and Control. 6 ]$ q, i4 C) C% o J8 eMDA GLOSSARY, VER. 4.0 T * Q+ Z( a5 b' c3 p301 TMD C 3 + |5 V0 }) W0 A" [4 M2 Q1 ]I Those assets that provide connectivity between and among Theater Ballistic Missile Defense forces. TMD ESM Theater Missile Defense Existing System(s) Modification (MDA term). TMD GBR See Theater Missile Defense Ground Based Radar (THAAD Radar). 6 j" R2 ~" W0 t- X! A! H4 oTMD IA Theater Missile Interoperability Architecture. 6 O p) s+ k9 H$ f; M( y, sTMD ITP TMD Integrated Test Plan. 3 n) l- W" l, v+ g/ ZTMDAS Theater Missile Defense Architecture Study. ; T8 V* U& P3 C: f: MTMDC Theater Missile Defense Council. TMDE Test Measurement and Diagnostic Equipment (ILS term). TMDI See Theater Missile Defense Initiative. / g6 s" \! b+ a. s; r2 ^! G/ ETMDSE Theater Missile Defense System Exerciser. 7 d) T M- I- XTMMM TOMAHAWK Multi-Mission Missile. TMP Technical Manual Plan (ILS term). / ?% E/ P) i1 CTMPCU Tomahawk Theater Mission Planning Center Upgrade. 8 e& r L9 E6 K) _% u- OTN (1) Terrestrial Network (C2E term). (2) Thermonuclear. TNF Theater Nuclear Forces [Treaty term]. 3 _" w. s; p4 o2 dTNT Trinitrotoluene. TNW Theater Nuclear Weapon. TO (1) Task Order. (2) Technical Order. TOA Total Obligation Authority. , `; a& S# j# X6 [2 @- BTOAM Tactical Air Operations Module. . D% ~ K2 E* C8 F/ STOC Tactical Operations Center. TOE Table of Organization and Equipment. TOF Time of Flight. TOI Track of Interest. 0 x0 _; J2 t9 N; W: tTOIA Task Order Impact Analysis. % C K# l3 I5 ]. lTolerance The ability of a system to provide continuity of operation under various abnormal ! E: D0 o$ l) wconditions. 7 k- t, V2 j9 r/ f0 y0 k0 `# u8 j: n6 _TOM See Target Object Map.

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Tomahawk US ground launched cruise missile. % V. P2 W0 h0 e6 A# wMDA GLOSSARY, VER. 4.0 T 6 Y& I! H" q; L4 z9 p302 - e- q- D( }* z9 p' z! ]1 kTOMD Task Radar Management Details. % W: W7 w% U6 I) K. m: A& x* K5 {TOMP Task Order Management Plan. 6 a9 }( p4 g3 U" aTOMS Total Ozone Mapping Spectrometer (NASA term). # W0 u: n6 v2 s9 m- U' mTOO Target of Opportunity. 5 ~& S/ C" a* g" L- fTOOL Target of Opportunity Launch. TOP Task Order Plan. Top-Down Pertaining to an approach that starts with the highest-level component of a - W3 C6 c+ ^$ X( {. _hierarchy and proceeds through progressively lower levels; for example, topdown design, top-down programming, top-down testing. Contrast with bottomup. Top-Down Design 5 g4 F% P8 N# Y* A7 UThe process of designing a system by identifying its major components, 7 ~) S5 _: m0 t5 m$ i' `% j5 gdecomposing them into their lower level components, and iterating until the 2 s6 f' M" H! u# Q7 O8 Ndesired level of detail is achieved. . M1 b [, c s' U+ ^0 z8 v ITop-Down Testing The process of checking out hierarchically organized programs, progressively, 0 R# ^3 f& k: M {, I2 Z6 Q$ yfrom top to bottom, using simulation of lower level components. TOPAZ A project to demonstrate the transfer of Russian thermionic space nuclear power technology to U.S. BMD applications. TOR Terms of Reference. $ \, F; d4 Z0 x$ U1 k& w, qTOS (1) Tactical Operations Shelter (Station). (2) Task Order Status. ; Q m9 N) y3 }- z* S0 ?0 L. U5 _TOT Time on Target 9 ~' ?1 F7 K- H/ v& A/ y) ~Total Obligation % t$ U9 g2 } e3 j j) _Authority (TOA) A DoD financial term, which expresses the value of the direct program for a given fiscal year. + M, {4 r7 v: {: PTotal Quality : A% `6 P4 Z' \- PManagement (TQM) , B7 i+ B% b/ S3 tA management philosophy committed to a focus on continuous improvement to product and services with the involvement of the entire workforce. TOTS Target Oriented Tracking System TOVS TRIOS Operational Vertical Sounder. Toxicity The kind and amount of poison or toxic produced by a microorganism, or possessed by a chemical substance not of biological origin. TP (1) Telenet Protocol (Telecomm/Computer term). (2) Test Program. TPALS Theater Protection Against Limited Strikes. 3 [; Q9 n2 S) N/ Y ]( _: xTPBM Terminal Phase Battle Manager. TPD Mobile Tactical Radar (US). TPDR Total Processing Data Rate (TelComm/Computer term). 1 V9 p( u9 f, X; U, W0 iMDA GLOSSARY, VER. 4.0 T 9 ?# q. U4 l8 X6 \4 I- P303 * B0 I' D: h0 K$ L# o x6 _TPEC THAAD Performance Evaluation Center. TPEM Technology Program Element Manager (SDIO/MDA term). TPFDD Time-Phased Force Deployment Data. & H7 A8 t6 H1 C. c6 f+ F. ~: R% ~7 N! ~TPFDDL Time-Phased Force Deployment Data List. TPFDL Time-Phased Force Deployment List. ' I2 q% {0 D* P" S7 l; v, Z: CTPM Technical Performance Measurement. TPMT Total Preventative Maintenance Time (ILS term). 2 ^0 e8 \7 n. X, \9 J2 C9 m7 v1 O& tTPO (1) Test Planning Organization. (2) THAAD Program Office TPP Test Procedure Plan. 2 i# \# e' J; A0 a; k# I2 q) qTPR (1) Terminal Phase Radar. (2) Trained Personnel Requirements. (3) Target Performance Report. & f+ d. m# A& G& F) _& z) JTPS Thermal Protection System. P7 L2 J; z2 ^# x. {7 I0 rTPT Theater Planning Tool. " ?& Y2 G7 u& H4 g* h$ zTPWG Test Planning Working Group. (U.S. Air Force) & }, b' [7 y' `# t' K! o5 T5 jTQM Total Quality Management. ( a) ]$ s; }1 k0 M5 b6 YTraceability (1) The characteristic of software systems or designs or architectures or 0 o7 X5 T1 b' p) R) }. {domain models that identifies and documents the derivation path (upward) and allocation/flowdown path (downward) of requirements and constraints. (2) The degree to which a relationship can be established between two or " [2 M9 V9 ?% e% m5 f$ tmore products having a predecessor-successor or master-subordinate ) ~4 z# w+ @6 a9 zrelationship to one another.

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Track (1) A series of related contacts displayed on a plotting board. 1 [' {6 H8 C; H0 f- ^* q" _- ^' S4 k(2) To display or record the successive positions of a moving object. - ]6 b& [8 n# T* w j(3) To lock onto a point of radiation and obtain guidance from. 4 H3 S5 m, r8 N; ~0 s, r(4) To keep a gun properly aimed, or to point continuously a target locating : f( W& S2 j2 r3 p2 f3 sinstrument at a moving target. & T4 Z; O4 [6 U+ ] s7 D. ~(5) The actual path of an aircraft above, or a ship on, the surface of the 9 z/ g. F7 r$ Zearth. Track Assessment The Track Assessment looks for anomalies in an object’s track data. An anomaly ' k3 i" y4 K% u9 e5 i0 w/ X- Iin the track may indicate a hit. % u! O' I/ B2 F; g: p% OTrack, Birth to 9 {' u1 u, {) L" g+ GDeath , Y" q2 j& j' ]; Y8 x4 R3 `" o3 d1 mThe maintenance of an associated track through all phases of flight (i.e., boost to reentry). + J8 y. |& H3 b" W# V- ^Track Correlation The combining of track information for identification purposes, using all available data. Track Extension This term usually applies to improvements in track estimates by use of new data. ( P: O1 @1 F; r' \+ F5 f. ~- m0 XIt is sometimes used to describe a process of target extrapolation to a future time ( U2 \* }- k1 F9 q5 Ror place (e.g., reentry). 6 c7 k2 s' B- yMDA GLOSSARY, VER. 4.0 T 304 7 |4 z, W- A7 _# WTrack File A target’s stated estimate, confidence, covariance matrix, and associated LOS 9 \1 z/ p9 i6 Q; R& O, Jmeasurements with irradiances with confidence of association; or some subset of ' P8 h z- i+ N7 athe above. ^/ b# I3 u' B% ?Track File-Track / B5 X" D6 m) G$ t9 [History A set of individual track reports on a particular object, which taken together produce useful approximation of that object's future position in space. Track Formation The process of determining the track or tracks of detected objects. It is usually a 2 [1 b# i) ?- R* ^three-step process of data association, track initialization, and track improvement by filtering. Tracking The act of generating and maintaining a time history of an object's position and / C1 I9 W2 A2 h1 o- V, Z- g% aany other features of interest. Tracking and . n1 B P* m% q/ i; c! Q6 ePointing Once a target is detected, it must be followed or “tracked”. When the target is successfully tracked, a weapon is “pointed” at the target. Tracking and pointing are frequently integrated operations. H/ o4 ]# n& Q6 ]Tracking Range (Max) The maximum line of sight distance at which a sensor can maintain track of an object. Track Initiation The formation of the first or initial estimate for a sensor system of the state vector " y3 k* }+ M* i2 r5 H, O& Hof an object. The process typically requires observation from a number of frames. Track Production Area % D8 D& Y" L$ m9 L r" M& I: lAn area in which tracks are produced by one radar station. 1 H8 I3 O, B5 s8 j$ U( PTrack Symbology Symbols used to display tracks on a data console or other display device. 3 M9 u1 ~+ W, R. `' z; w: x) yTrack Telling The process of communicating air surveillance and tactical data information between command and control systems or between facilities within the systems. - e4 N" R% l2 c: y9 v; {+ yTelling may be classified into the following types: back tell; cross tell; forward tell; lateral tell; overlap tell; and relateral tell. TRADEX Target Resolution and Discrimination Experiment. TRADOC U.S. Army Training and Doctrine Command, Ft. Monroe, VA. 3 f5 ]' V2 a. R0 |. P4 m9 }+ kTraffic Capability 5 @1 w( y6 {5 x+ N8 i" C. pMaximum |" ~, @/ F. n, i# o5 t4 m% UThe maximum number of objects per unit time which the sensor system can maintain track files. Traffic Decoy Decoy that matches RV characteristics in the exoatmosphere and high 4 o- B5 o5 G$ V* y& lendoatmosphere. 1 \+ R% ?2 R: O" W2 JTrain Threat geometry with objects placed in a line (string) along the velocity vector of 3 C$ l) n3 y5 C% { Y: }reentry. Trajectory The curve described by an object moving through space. & M4 c, B' a7 C' N1 {5 \Trajectory , W5 [" `* a& n. u. @* vHistories 7 A. p5 E: ]& e* r7 S6 M7 mTrajectory information on targets recorded over a period of time. " a, ]. `( Y* |. d- V7 G& B7 gTRAK A data base management system (not an acronym). 8 y6 b4 [7 p. Y" cTrans-Attack Period from first tactical indication of attack until termination started, i.e., postattack. 7 B/ t' Y' H L, @# YMDA GLOSSARY, VER. 4.0 T 305 1 O& Q7 H/ O) [. u2 t$ HTRANSCOM [U.S.] Transportation Command, Scott AFB, IL. 4 F3 F, ?- X$ Z9 TTRANSEC Transmission Security. Transition The period in which the world strategic balance would shift from offensedominance to defense-dominance. Transition to 2 r" O, i1 r& m- f" U9 n% CProduction 5 Y" K, S' \9 t# w( M- d- I) O: YA risk reduction process during which the program shifts (passes) from development to production. It is not an exact point, but is described as a * ]' Q: |4 H# s% Pprocess consisting of disciplined engineering and logistics management to 4 H/ |* ^2 x" Iensure the system is ready for manufacture. (See DoD 4245.7-M.) Transmission ! z6 H! e$ b* J$ g2 uSecurity ' q# y: W0 {$ L; P3 o1 J& J7 G% X(TRANSEC) That component of security, which results from all measures, designed to protect 7 W+ u0 y! L+ n5 w9 Pcommunications transmissions from interception and traffic analysis. (See 0 |' A" n a! e/ Y0 fCOMSEC.)

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Transonic Of or pertaining to the speed of a body in a surrounding fluid when the relative speed of the fluid is subsonic in some places and supersonic in others. This is 7 }: ~) B+ F. Z8 `: {8 Gencountered when passing from subsonic to supersonic speeds and vice versa. Transponder A receiver-transmitter that will generate a reply signal upon proper interrogation. TRAP Tactical Receiver and Related Applications. Trap Door A hidden software or hardware mechanism that permits system security + ^8 o" C: ?; Z9 G8 l! M* z, Pmechanisms to be circumvented. Traveling Wave * }4 x L( i2 @6 ?Tube (TWT) An electronic tube in which a stream of electrons interact continuously or repeatedly with a guided electromagnetic wave moving substantially in synchronism with it, in such a way that there is a net transfer of energy from the stream to the wave; the tube is used as an amplifier or oscillator at frequencies in + E5 R# [7 d8 O+ {& ~2 @the microwave region. Traverse (1) To turn a weapon to the right or left on its mount. (2) A method of surveying in which lengths and directions of lines between points on the earth are obtained by or from field measurements, and used in determining positions of the points. " l6 M/ i% n* k" n6 Y7 \. }4 x, W, P( OTraverse Level That vertical displacement above low-level air defense systems, expressed both 2 u. x ]. C' g' C- Kas a height and altitude, at which aircraft can cross the area. TRB Tactical Review Board. TRD Technical Requirements Document. TRE Tactical Receive Equipment. ! c/ M5 B3 `) q8 K5 ]6 Y5 lTREA Transmit/Receive Element Array (THAAD). - w' X9 d/ U& kTREE Transient Radiation Effects on Electronics. ! ]( B/ r* L2 v9 hTREM Total Radiation Environment Model. TREPS See Thrusted Replicas. TRESIM Tactical Receive Equipment Simulator. MDA GLOSSARY, VER. 4.0 T 306 3 O3 i! g2 y5 T2 S, `* l7 i; LTRG Threat Reference Guide. ' ~* q7 W9 o. _TRI-TAC Tri-Service Tactical Digital Communications System. TRIDENT Class of US ballistic missile submarines (USN term). TRIDENT I (C-4) US SLBM (USN term). TRIDENT II (D-5) US SLBM (USN term). , o* M3 C4 h5 B3 xTRIM Toxic Reduction Investment and Management. + F* c, U: P) x& e9 {' N$ ]TRM Technical Reference Model. TRMP Test Resources Management Plan. 3 |* o2 u$ w$ v! C! ^% X" qTRN (1) Task Requirements Notice. (2) Test Requirements Notification. 3 E# B# } r. H; t) g9 ]- xTrojan Horse A computer program with an apparently or actually useful function that contains additional (hidden) functions that surreptitiously exploit the legitimate 7 W0 b. \3 E0 t0 dauthorizations of the invoking process to the detriment of security or mission " f! D% M3 z" o* P; y5 ~performance. TROPO Tropospheric Scatter. Tropopause The imaginary boundary layer dividing the stratosphere from the lower part of the atmosphere, the troposphere. The tropopause normally occurs at an altitude of about 7.62km to 13.71km in polar and temperate zones, and at 16.76km in the 4 F: J& y6 u: u1 e% P) k' Gtropics. (See Stratosphere, Troposphere.) ( x! D1 v' X0 l' D9 T" [" |Troposphere The region of the atmosphere, immediately above the earth's surface and up to / ]+ l+ I' Z5 ?5 ?/ f$ J) d6 sthe tropopause, in which the temperature falls fairly regularly with increasing ! }' G- ?" I4 @2 O* [2 C$ I7 naltitude, clouds form, convection is active, and mixing is continuous and more or less complete. ; B ?( a9 B' U$ _2 r' a" n# o8 DTropospheric - K" V# m, n ]* F7 V5 m4 V* ~2 }Scatter 4 E8 H8 O. |. S. O/ y7 s- m3 |( ?The propagation of electromagnetic waves by scattering as a result of irregularities in the physical properties of the troposphere. TRP (1) Test Readiness Program. (2) Technology Reinvestment Program. 5 Y3 c- }" ~" u" x; `(3) Technology Readiness Program (pre-acquisition program status). 3 B8 l: O: {. S$ Q1 p% d- _1 W(4) Technical Requirements Package. TRPC Technology Readiness Planning Committee. , B7 w/ X( e- F$ e, Y7 z/ JTRR Test Readiness Review. Trusted 7 S4 C, E. [% l5 X6 a% gComputer System/Software A system or its software that employs sufficient hardware and software integrity % m1 y' b @% _1 n/ O" A+ l# Vmeasures to allow its use for processing sensitive or classified information. $ ^ m3 q, r7 C# f1 B6 {/ m* I( r+ j0 fTrusted Path A mechanism by which a person at a terminal can communicate directly with the Trusted Computing Base. This mechanism can only be activated by the person of the Trusted Computing Base and cannot be imitated by un-trusted software. 5 H: Y6 c V5 iTRW TRW, Inc. TS (1) Terminal Service. (2) Top Secret. MDA GLOSSARY, VER. 4.0 T 307 TSA Technology Security Analysis. - w1 R0 Y9 u6 E5 o2 C" E6 g8 W, @TSD Tactical Surveillance Demonstration. 8 [$ h R7 o* l1 [. b( ]TSCM Tomahawk Strike Coordination Module (USN term). TSD Tactical Surveillance Demonstration. ) A9 T4 \: n l# h, a' [TSDE Tactical Surveillance Demonstration Enhancement. $ d' h/ b, R6 F( h9 G! a! ?5 JTSEU Technology Seeker Evaluation Unit. TsIAM Moscow’s Central Institute of Aviation Motors. TSM TRADOC System Manager. TSMA Theater of Strategic Military Action. ' d5 I, |( v+ Q' ~TSP Target Support Plan. . P- M7 E' U1 v( RTSPI Time, Space, Position Information. 3 X8 z) i$ }+ v( X: yTSR Target System Requirements.

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TSRD Target System Requirements Document. ' X. w2 e3 p1 F' _TSS Terminal Surveillance Sensor. # B% N2 ^0 R. [1 W zTSSAM Tri-Service Standoff Attack Missile. TSWG Target Signature Working Group. + x* b! X2 s4 m3 X% t# B1 Z- V6 CTT Total Time. TT&C Telemetry, Tracking and Command. TT&E Technical Test and Evaluation (Army). TTA Total Time Accounting. ; H- i6 E) y0 M+ p9 v4 B) pTTBM Terminal Tier Battle Manager. TTBT Threshold Test Ban Treaty. TTD&D Test Technology Development and Demonstration. A portion of the CTEIP program, which funds the development and demonstration of technologies, which have significant potential for improving testing. TTEL Tools and Test Equipment List (ILS term). # _- O+ s: G8 I% F' uTTL Transistor-to-Transistor Logic. TTP Tactics, Techniques, and Procedures. TTSARB Technology Transfer and Security Assistance Review Board. TTT Test Technology Transfer. MDA GLOSSARY, VER. 4.0 T 308 + Y9 a, X9 B q8 n J! B3 }TTV Technology Test Vehicle. TTY Teletype. TUG TRACE User Group. / G; R! N$ Q; S8 QTV Thrust Vectoring (rocker engineering term). + F: T* o. u6 UTVC Thrust Vector Control. # v; q! v9 ]1 } W* U" G) E# ^TVE Technology Validation Experiment. TVM Track-via-Missile. TVV Technology Validation Experiment. TW Tactical Warning. TW/AA See Tactical Warning/Attack Assessment. 7 G# g* e5 v7 s% kTW/SD Tactical Warning and Space Defense. ( y+ g4 u( O6 {' U! ~TWG Technical Working Group. TWS TOMAHAWK Weapons System (USN term). TWT Traveling Wave Tube. + W. l0 B, T/ G" T( F% \TWTA Traveling Wave Tube Amplifier. (Electronic Engineering term). 2 c0 n7 B7 h( c# n. X( xTY Then Year (PPBS term). - @: a y2 r9 V# H4 d% @$ h( B' j" KTY$M Then Year Dollars Millions. . S: t- Q+ ^+ |) qType A - System Specification 4 p& Z& R# K/ p& L6 @/ E- l" b( OStates all necessary requirements in terms of performance, including test provisions to assure that all requirements are achieved. Essential physical constraints are included. Type A specifications state the technical and mission , Z$ ?6 y1 r" e5 l4 brequirements of the system as an entity. 8 A5 S3 l1 `9 g( t" {4 K4 iType B - Development Specification States all necessary requirements in terms of performance. Essential physical constraints are included. Type B specifications state requirements for the * Q8 W' B1 I& Z3 M& Rdevelopment of items other than systems. They specify all of the required item functional characteristics and the tests required to demonstrate achievement of 7 G8 D) t5 S. B* D$ [& q2 p% X6 pthose characteristics. 9 \0 ^) ?6 |* ?1 v; ]: {. | OType C - Product Specification Product specifications are applicable to any item below the system level, and may be oriented toward procurement of a product through specification of primarily function (performance) requirements or fabrication (detailed design) 0 t" d0 o6 p* j \requirements. Type C specifications intended to be used for the procurement of items including computer programs. Typhoon Class of Soviet ballistic missile submarines. * O+ R& [9 j B) UTyping The act of recognizing objects by measuring a set of observables, computing a 6 O" u3 r- V: o: bset of characteristics, and associating the characteristics with a specific class of ) m5 I9 K5 {- ^9 Mobjects (i.e., SS-18, SS-24). & N5 x# k4 ]1 W: {8 ~$ }MDA GLOSSARY, VER. 4.0 U / O1 O3 c6 E+ }4 e7 L309 U Uranium. U&S Unified and Specified [commands] (pre-1996 term). 2 h% {4 h7 p1 @8 ?& JU.K (UK) United Kingdom. U.S. (US) United States. 1 R# a" s6 p1 V7 `$ T$ j. tU.S. West U.S. West Incorporated. U.S.S.R. Union of Soviet Socialist Republics. UA User Assessment (NMD BMC3 term). 6 f$ a- O! q* ? L( Q/ B1 s. F* pUAE United Arab Emirates. UAV Unmanned Aerial Vehicle. + P: m5 R6 C, e2 ZUAV BPI Unmanned Aerial Vehicle-based Boost Phase Intercept. UCAP UAV Combat Air Patrol. UCC Uniform Commercial Code (US legal term). UCP Unified Command Plan. UD/ASD United Defense/Armaments Systems Division. UDMH Unsymmetrical Dimethylhydrazine (a liquid propellant rocket fuel). UDS Universal Documentation System. A standardized comprehensive tool for stating and coordinating program requirements for testing MRTFB ranges, as well as the capabilities and plans of test ranges to support program requirements. It $ ^/ Y7 t$ a+ X# |- Vconsists of a series of six planning and execution documents: 10 are the Program Introduction (PI) (also called the Program Introduction Document (PID)), 2) Statement of Capability (SC), 3) Program Requirements Document (PRD), 4) Operations Requirements (OR), 5) Program Support Plan (PSP), and 6) the & e" ]4 f% `* R- ZOperations Directive (OD). The UDS was developed and is regulated by the Range Commanders Council (RCC).

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UE Unit Equipment. UEME Unified Electro-Magnetic Effects. UEWR Upgrade Early Warning Radar. UF4 Uranium tetra fluoride. UF6 Uranium hexafluoride. MDA GLOSSARY, VER. 4.0 U & N( n y4 W6 `# e( Z310 UFG User Focus Group. ) A7 c# z: m3 r' ^0 HUFO UHF Follow-On [Satellite Communications System]. + s j4 U$ {+ d) o. Z g' c1 jUFP Unit Flyaway Price. UGF Underground Facility. * N' q5 D" I- y& h% L. jUGS Unattended Ground Sensors. % _1 U7 ?" ]1 k9 ^- k2 MUGT Under Ground Test. " B$ N5 B; |7 G* r2 F! Q" Y- hUHF Ultra High Frequency. UIC Unit Identification Code. ) \$ T0 c% Z( w- kUIN User Interaction Node. O K" C E) V0 v0 RUKAS (1) UK Architecture Study (2) UK Associate Studies. UKEADTB UK Extended Air Defense Test Bed. UKTB United Kingdom Test Bed. : t+ p0 T- K: z( D# iULCS Unit Level Circuit Switch (SINCGARS term). ULS Unit Level Switch. ULSA Ultra Low Sidebobe Antenna. ULTDS Unit Level Tactical Data Switch (SINCGARS term). Ultraviolet (UV) Electromagnetic radiation of wavelength between the shortest visible violet : o3 @5 x' n7 [$ b% D(about 3,850 Angstroms) and soft x-rays (about 100 Angstroms). UMD Unit Manning Document. UMMIPS Uniform Material Movement and Issue Priority System (ILS term). : D3 b& _6 e3 V& ~7 v& HUNAAF Unified Action Armed Forces. 6 R# ?6 N# G+ T @3 h3 c: yUNC United Nations Command. . F$ Z: D7 l7 `" l. x* |8 g: FUnconventional % ~& I- i, f7 c+ t/ n5 ~Warfare : \: {, ? `0 A( I/ E0 k/ S4 s6 \A broad spectrum of military and paramilitary operations conducted in enemyheld, enemy-controlled or politically sensitive territory. Unconventional warfare - x4 f- k; t! I! [ g' Cincludes, but is not limited to, the interrelated fields of guerrilla warfare, evasion 5 _4 B( t" n3 {7 ~. u3 b. W/ land escape, subversion, sabotage, and other operations of a low visibility, 2 }: j" y( R( X$ _covert, or clandestine nature. Unified Action 8 R& ^5 r( l* ? y. X, TArmed Forces W- Q6 G2 d! z4 OA publication setting forth the principles, doctrines, and functions governing the 3 E+ W3 |* h4 ` s8 ]# x3 R, ractivities and performance of the Armed Forces of the United States when two or more Services or elements thereof are acting together. & Q. o r# K" j H6 FUnified Command A command with a broad continuing mission under a single commander and composed of significant assigned components of two or more Services, and which is established and so designated by the President, through the Secretary 5 g1 ]* M# c9 |) E, u8 Cof Defense with the advice and assistance of the Joint Chiefs of Staff. MDA GLOSSARY, VER. 4.0 U 0 D" v" ?2 U: J7 ~: `311 ( q8 c' m) o1 mUNISYS UNISYS Corporation. - U$ ]) @, h+ V% W3 }& bUnited States , C: N8 {! L' ^Army Space Command (USARSPACE) The Army component command of USSPACECOM. Responsible for the Army elements of the SDS system. Located in Colorado Springs, CO. . w' Q5 i! Q! t) Q zUnited States Space Command 6 ]3 X" Y7 e$ @! ~! ]% }(USSPACECOM) - h9 z, [- k. ^; UThe unified command responsible for planning and conducting ballistic missile defense. Located in Colorado Springs, CO. United States {0 j$ H5 {- P" [4 W/ OStrategic Command (USSTRATCOM) The DoD unified command responsible for carrying out directed nuclear and nonnuclear strategic air, intercontinental ballistic missile, and sea-launched ballistic missile offensive combat strikes. Located at Offutt AFB, NE. United States 4 |0 ~! K6 `/ [8 A% NTransportation Command (USTRANSCOM) The DoD unified command responsible for providing air, land, and sea transportation for the Department of Defense, both in time of peace and time of war. It is also responsible for providing airlift, sealift, surface transport, and terminal services, and commercial air, land, and sea transportation, including as needed to support the deployment, employment, and sustainment of U.S. forces 6 l" R) y, _% ~+ {7 |: S; lon a global basis, as directed by the Secretary of Defense. Located at Scott AFB, IL.

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Unk Unknown. Unresolved Objects Objects so closely spaced with respect to the sensor focal plane as to be ; H+ j) d* _. ~indistinguishable from a single object. UNSC United Nations Security Council. UnSecEnergy Under Secretary of Energy. 6 N3 g: _5 O0 L: rUOC Usable on Code (ILS term). , c$ Q- @: y6 D; g% _UOES See User Operational Evaluation System. ( e2 {) [% h7 R" Y' V9 A$ ~UPD Unconventional Passive Discrimination. ! Z* c+ N1 ]% E6 f, m; j; oUPS Uninterruptible Power Source. UQT Unit Qualification Training (ILS term). & K' Z1 [2 Q9 g/ d8 }URIP University Research Initiative Support Program. URL Uniform Resource Locator (internet protocol term). URT Upgraded RTD. 4 W2 h p; F) o+ o4 P/ JUS/UK United States/United Kingdom. USA (1) United States Army. (2) Under Secretary of the Army. USAADASCH U.S. Army Air Defense Artillery School. 3 u) X9 ]1 q& h. H# o6 Y* nUSAAE U.S. Army Acquisition Executive. MDA GLOSSARY, VER. 4.0 U 312 USACE United States Army Corps of Engineers. USACOM United States Atlantic Command, Norfolk, VA. USAF United States Air Force. USAF/AFMC/ESC U.S. Air Force Materiel Command, Electronic Systems Center; ex-ESD. 9 H5 B- `6 w/ G2 l2 t% yUSAF/AFMC/SMC U.S. Air Force Materiel Command, Space and Missile Systems Center; ex-USAF ! m3 ~5 O9 N# _* W" o- z! ~Systems Command /SSD. " f: h- N- b/ P4 wUSAF/OTEC U.S. Air Force Operational Test and Evaluation Center. + `7 r8 \2 ^( u9 c% B+ jUSAF/SMC U.S. Air Fore Space and Missile Systems Center, Los Angeles AFB, CA. ( |7 y% g6 _$ G/ m9 jUSAF/SSD U.S. Air Force/Space Systems Division; See USAF/AFMC/SMC. USAFE U.S. Air Forces in Europe. USAFLANT U.S. Air Force, U.S. Atlantic Command. USAKA U.S. Army Kwajalein Atoll. / j8 P/ ^- j" b7 O# ]. N, sUSAMICOM U.S. Army Missile Command, Redstone Arsenal, AL. USAMSIC See MSIC. USAMSAA U.S. Army Materiel Systems Analysis Activity. USAOEC U.S. Army Operational Evaluation Command, Alexandria, VA. \, Q4 Q. ~4 o/ q+ K3 _9 pUSAOTEC U.S. Army Operational Test and Evaluation Command. USARCENT U.S. Army Forces, U.S. Central Command. + o0 L2 N/ l. s; f! k8 j. i& X( \USAREUR U.S. Army Forces, U.S. European Command. ' Z2 L; @5 F8 MUSARLANT U.S. Army Forces, U.S. Atlantic Command. USARPAC U.S. Army Forces, U.S. Pacific Command. USARSPACE See United States Army Space Command. USASDC U.S. Army Strategic Defense Command (<1Oct 92). : z# ~1 b: h! H9 {4 b5 AUSASSDC U.S. Army Space and Strategic Defense Command, Huntsville, AL USATECOM U.S. Army Test and Evaluation Command. USATRADOC U.S. Army Training and Doctrine Command. USB Upgraded SBD. USC U.S. Code. USCENTAF U.S. Central Command Air Forces. MDA GLOSSARY, VER. 4.0 U & L5 _' [ A# @1 ~313 USCENTCOM United States Central Command, MacDill AFB, FL. * B+ n" H2 b4 Y0 i* T6 J5 lUSCG United States Coast Guard. 9 ~' u s, F" C3 V' FUSCINCCENT Commander in Chief, U.S. Central Command. USCINCEUR U.S. Commander in Chief, Europe. USCINCLANT Commander-in-Chief, U.S. Atlantic Command. USCINCPAC Commander-in-Chief, U.S. Pacific Command. - L1 E: I* k9 x& U7 YUSCINCSPACE Commander-in-Chief, U.S. Space Command. USCINCTRANS Commander in Chief, U.S. Transportation Command. & O$ t# x8 [8 ]: Z+ x) F" C. UUSCS U.S. Customs Services. USD Under Secretary of Defense. : q5 ~8 q) P2 u1 R3 D- C3 F% bUSD(A&T) Undersecretary of Defense (Acquisition and Technology). USD(A) OBSOLETE. Under Secretary of Defense (Acquisition.). . H' C6 ]3 R4 WUSD(A)/STNF Under Secretary of Defense, Acquisition, Strategic and Tactical Nuclear Forces. USD(P) Under Secretary of Defense for Policy. 4 N/ K* J, a; _USDA United States Department of Agriculture. . z' {3 r# x8 Q, |7 m l0 d: CUSDAO U.S. Defense Attaché Office. ' I* [* d" L1 g: W. m7 S* }+ zUSDELMC U.S. Delegation to the NATO Military Committee. USDR&E Under Secretary of Defense for Research and Engineering. & K; E$ s/ I0 B) X3 I. hUser Friendly Primarily a term used in automatic data processing (ADP); it connotes a machine - Q9 u+ A2 T1 W# N(hardware) or program (software) that is compatible with a person's ability to , h) }# ]2 Y+ ], m8 R2 @" x, toperate it successfully and easily. User Operational % v9 t D5 K9 {7 u9 mEvaluation System (UOES) ; ]" Q: a* u* f& xPrototypical system developed and tested as part of the early phases of the 0 e. D2 A: P! b. }5 F Adevelopment process. A UOES has two objectives: (1) testing, evaluation, and & r/ [1 r4 b* V$ m' h# g+ Btraining for a system proceeding through the normal acquisition process; and (2) ) z. }. f( g; M/ |: Q5 Ycontingency defense capability should the need arise prior to completion of the normal acquisition cycle. USEUCOM United States European Command, Stuttgart-Vaihingen, Germany. USFJ U.S. Forces Japan. USFK U.S. Forces Korea. USFK/CFC CSFK Combined Forces Command. / V% t0 z" R9 ?0 q$ z/ t9 `, rUSG U.S. Government. USIA United States Information Agency.

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MDA GLOSSARY, VER. 4.0 U % j& N) D* _- s3 a5 F$ w314 USLANTCOM United States Atlantic Command (Now see USACOM). 0 M( _* ~+ H f2 J) q% ~USLANTFLT U.S. Atlantic Fleet. USMAR- FORCENT U.S. Marine Component, U.S. Central Command. * M4 z9 [) F+ q, vUSMAR-FORLANT U.S. Marine Component, U.S. Atlantic Command. & ^0 ~% G, f3 A8 [% ~+ iUSMAR-FORPAC U.S. Marine Component, U.S. Pacific Command. . Z# p! c* Z8 Z& X7 uUSMC United States Marine Corps. USMCR United States Marine Corps Reserve. ; {) }* P/ p \/ O* b$ JUSMILREP U.S. Military Representative. 7 m9 r8 i6 _7 q# l; }% H9 G3 fUSN United States Navy. USNAVCENT U.S. Naval Forces, U.S. Central Command. USNAVEUR U.S. Naval Forces, U.S. European Command. . Z( Q% u7 W# oUSNIP U.S. Naval Institute Proceedings. USNO U.S. Naval Observatory. USNPGS U.S. Naval Post-Graduate School. ( i' s( z) G' tUSPACAF U.S. Air Forces, U.S. Pacific Command. USPACFLT US Pacific Fleet. ( `" _4 C* V/ {4 yUSPACOM United States Pacific Command, Pearl Harbor, HI. USREPMC U.S. Representative to the Military Committee (NATO). ( i; g6 ]3 T6 X, ]3 d% NUSSC United States Space Command. USSOCOM United States Special Operations Command, Tampa, FL. 9 @3 [3 y7 @9 U fUSSOUTHCOM United States Southern Command, Panama Canal Zone, Panama. + x7 o- v% g" A. Q5 \# LUSSPACECOM See United States Space Command. USSS United States Secret Service. ! R; Z2 F- l# m% NUSSTRATCOM See United States Strategic Command. 4 f, C$ p+ `" y; A) x4 vUSTA United States Telephone Association. 5 _' m( \1 t' ?0 i" SUSTRANSCOM See United States Transportation Command. ' H7 J b! D6 ]: L) F6 PUT Universal Time. UTC Unit Type Code. & U N) ~. A h6 Y) Z2 E! M/ M: ZMDA GLOSSARY, VER. 4.0 U 315 * ]4 D) m+ d. l EUTM Universal Transverse Mercator. - l+ ?5 S3 w5 D) ~UTTMDS Upper Tier Theater Missile Defense System. See THAAD System. 2 U6 w5 C' J3 O+ CUUT Unit Under Test (ILS term). UV Ultraviolet. 3 d8 z; h7 J6 s+ ?. gUV Electro- Optics / y4 n9 r1 X, f2 s) TTechnologies/techniques employed by optical sensors in the wavelength spectrum shorter than visible (e.g., less than 4,000 A). UVPI Ultraviolet Plume Instrument. UW Unconventional Warfare. / t7 i P3 ?7 v; AMDA GLOSSARY, VER. 4.0 V ; W. T' X! W( P; g8 D/ T316 V Volt. # R |- P! X8 ?& B6 x7 r! uV&H Vulnerability and Hardening. V&V Verification and Validation. (See Verification, Validation, and IV&V.) V/STOL Vertical Short Takeoff and Landing [aircraft]. VAFB Vandenberg Air Force Base, CA. Validation Confirmation that the processes and outputs from a test resource parallel real world processes and are realistically sensitive to change in the environment, tactical situation, system design, tactics, and threat. ( F" y& }1 x7 r3 M- cVAMOSC Visibility and Management of O&S Costs. 8 L0 |- D% @7 \: iVAR Visitor Access Request. . O/ L4 p0 U, ^- ?! cVariability The manner in which the probability of damage to a specific target decreases with the distance from ground zero; or, in damage assessment, a mathematical factor introduced to average the effects of orientation, minor shielding, and uncertainty of target response to the effects considered. $ S7 O+ v& F/ W: iVBO Vertical Burn-Out (velocity). VCC Voice Communications Circuit. 5 p/ D+ o/ O5 z/ o. o9 yVCRM Verification Cross Reference Matrix. . m, W1 f" d1 r: r0 q. GVCS Voice Communications System. : O$ S$ M& ]! F4 aVDC Volts Direct Current. VDD Version Description Document. VDU Visual Display Unit. VE Value Engineering. VECP Value Engineering Change Proposal. Verification (1) Confirmation that all data inputs, logic, calculations and engineering 3 T" ~2 t$ B5 mrepresentations of a T&E resource accurately portray the characteristics, / W$ y0 X! ~" }4 }, Icalculations, logic, and interactions of the system under evaluation. (2) The process of evaluating a system or component during or at the end of the development process to determine whether it satisfies specified requirements. VESA Video Electronics Standards Association. VFR Visual Flight Rules. % b+ i' g9 v E! a* e' hVGA Video Graphics Array (Telecomm/Computer term). VHF Very High Frequency. + \1 m& L! V- G) _% ?8 mVHSIC Very High Speed Integrated Circuit. MDA GLOSSARY, VER. 4.0 V 317 ) v& |" Z, R) H* S% ^; @ B8 wVIDS Vehicle Integrated Defense Software (USA term). VIGILANTE Viewing Image/Gimbaled Instrumentation Lab-Analog Neural Three-D . N; e2 _8 g& }* G/ E% q% _Experiment. VIGILANTE involves building a small computer (ANTE) offering 1/12 Operation Per Second (OPS), using a mixture of experimental three-dimensional circuitry and commercial components. Project also demonstrates VIRGIL, a gimbaled airborne sensor with visible, experimental UV and quantum-well IR cameras capable of tracking targets that can be detected, identified, and * u4 M' B' W5 B( eprecision-tracked with the ANTE processor. VIM Vibration Isolation Module. VINSON Encrypted Ultra High Frequency Communications System. ! y8 j" I; J* g' sVIS Visible. VIS/UV Visible/Ultraviolet. Visibility Range (or Visibility) The horizontal distance (in kilometers or miles) at which a large dark object can # u P3 L" s- Cjust be seen against the horizon’s sky in daylight. The visibility is related to the clarity of the atmosphere ranging from 170 miles (280 kilometers) for an 7 o, s' i% U" w$ A( iexceptionally clear atmosphere to 0.6 mile (1.0 kilometer) or less for dense haze or fog. The visibility on an average clear day is taken to be 12 miles (19 kilometers). Visible Electro- 8 _& i' z/ \2 J2 O' x, m. D! v$ HOptics 6 `/ j1 g2 O' V. V/ pTechnologies/techniques employed by optical sensors in the visible portion of the wavelength spectrum. ) c! F: t# h [! W9 uVLAR Vertical Launch and Recovery (UAV JPO term). + ]3 z$ x+ R, t5 L, G/ t, ]VLF Very Low Frequency. ' b9 H( f; B* W) SVLOS Vertical Line of Sight.

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VLS Vertical Launch System. VLSI Very Large Scale Integration. 7 \ X4 n& h" M" TVLSIC VLSI Circuits. 5 y* ~7 m D$ F" D4 QVLWIR Very Long Wavelength Infrared. 8 Y5 `) \9 Q: e$ lVME Versa Modular European [standards]. VMF Variable Message Format (Telecomm term). VOX Voice Actuation. : u9 F7 J& _' O( l6 {2 ]VRI Vanguard Research, Inc., Fairfax, VA. 0 H6 `; ~: {1 N$ S% _VTC Video Teleconference. 4 ]( t' Y$ I# W! t: M# k. ~+ B: h% UVTOL Vertical Takeoff and Landing [aircraft]. VTOL-UAV Vertical Takeoff and Landing Unmanned Aerial Vehicle. & F" w" f2 l1 E! TVUE Visible Light/Ultraviolet Experiment. # \ y+ D V6 ZMDA GLOSSARY, VER. 4.0 V ! |* o6 Z4 B, \3 Y9 u318 Vulcan UK bomber. VV&A Verification, Validation, and Accreditation. VVER Pressurized water type nuclear power reactor. # l& G9 S% x8 |6 G: g- _VVIRF Verification and Validation Information Request Form. 3 ?8 \$ k% A1 }+ l l0 s" uMDA GLOSSARY, VER. 4.0 W $ y2 [! \4 }1 j9 H) n6 _319 W/ With. w/o Without. & N9 u3 K9 A* L/ FW/TD Warning/Threat Detection. WAA Wide Aperture Array. WALEX Warfare Analysis Laboratory Exercise. WAM (1) Worldwide Military Command and Control System (WWMCCS). (2) Wide Area Munition. (3) Wide Area Mine. (4) Wide Area Missile. 9 k# Q" T+ `; ~/ F9 h& I/ S( d9 ]0 YWAN Wide Area Network (Telecomm/Computer term). 6 Q$ v" o, c: B, Q6 m$ @WAP Wide Azimuth Probe. }* _2 A+ Q; D5 }5 i! ~War Game A simulation, by whatever means, of a military operation involving two or more opposing forces, using rules, data, and procedures designed to depict an actual or assumed real life situation. Wargame 2000 Title of MDA program for development of a state-of-the-art simulation tool at the . A+ M( {1 Z& {7 ZJNTF for use in CONOPS validation, missile defense program design verification, validation and accreditation, and support CinC/Allied wargames and assessments. Warhead A weapon, usually thermonuclear, contained as the payload of a missile. 6 n& _/ r) X% }/ @) r3 u. `9 p' zWarhead Mating The act of attaching a warhead section to a rocket or missile body, torpedo, airframe, motor, or guidance section. Warhead Section A completely assembled warhead including appropriate skin sections and related 3 R I- q3 W/ Q; i, S# a) Wcomponents. . x! w( c* H4 S" h# V) RWARM Wartime Reserve Modes. ) H8 a' X; r+ V4 z0 F7 f8 F2 rWarning of Attack A warning to national policymakers that an adversary is not only preparing its ! z2 [+ S2 e* B/ U6 S/ f7 barmed forces for war, but intends to launch an attack in the near future. Warning Order A preliminary notice of an order or action that is to follow. , `5 ?, U* [" d- S2 eWARSIM Warfighter Simulation (US Army term). ; f" t3 L, _2 S+ EWARSIM 2000 Warfighter Simulation 2000 (US Army term). Wartime Reserve Modes (WARM) Characteristics and operating procedures of sensor, communications, navigation & K; ^/ j: U3 w0 K! Aaids, threat recognition, weapons, and countermeasures systems that (1) will $ h+ B5 S8 F) r/ b" `; }5 P2 zcontribute to military effectiveness if unknown to or misunderstood by opposing 5 b2 y" e; L: j1 R/ B* p2 vcommanders before they are used, but (2) could be exploited or neutralized if , g( x" L$ X" H8 U- R" m9 zknown in advance. Wartime reserve modes are deliberately held in reserve for 8 u" E1 w+ l& _/ D( Q) `% owartime or emergency use and seldom, if ever, applied or intercepted prior to " B4 ^3 i% f& ~+ n0 fsuch use. WAS Wide Area Sensor. WASP Wide-body Airborne Surveillance Platform. A modified DC-10. ! O' Z( g. n- u4 L: t* q$ @MDA GLOSSARY, VER. 4.0 W 5 T" a8 R' q3 n: J2 {! r& @320 % S; r/ u, s4 p. gWASHDC Washington, District of Columbia. Wastage (Max) The maximum number of defense weapons which, when used, will be ineffective % n# u+ b% R/ @7 f0 t0 qin contributing to the defeat of the offense. 2 o2 e) x, c. k6 J$ YWatch Condition , X/ G% r+ ~ Y2 D' L/ j9 ?) D(WATCHCON) $ O# u7 X4 t& E+ |$ ASeries of readiness conditions used by the intelligence community to alert staffs [* Q5 S! i0 x- R7 r- ^& Ito watchfulness without raising DEFCON. ; f& w1 W. U" mWATS Wide Area Telephone System. WAVE Wideband Angular Vibration Experiment. ! P' A' ~0 N5 G3 W1 g! {/ y9 uWavelength The distance between two points having the same phase in two consecutive cycles of a periodic wave, along a line in the direction of propagation. + ?% d% G4 R: R2 ^WB Wideband. % S0 J: T$ s% e( @7 F6 sWBM Weapons Battle Manager(s). WBS See Work Breakdown Structure. WCC (1) See Wing Control Center. (2) Weapons Control Computer. WCG Workstation Computer Graphics (Computer term). % B$ { R# A2 [1 LWCP (1) Weapon Control Processor. (2) Weapon Control Platform. WCS Weapons Control System. WDM Wavelength Division Multiplexon. Weapon Enabling The set of control functions without which defense weapons cannot be launched.