航空缩略语词典

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MDA GLOSSARY, VER. 4.0 T 298 Theater Missile 8 g2 Y/ \) A/ ]9 |( DDefense Council % i" H4 C+ @. B2 k4 C- u- }(TMDC) : B G5 |* w/ ?1 x8 x: ?9 XA consultative body for considering TMD family of systems planning and 0 S; u o( r) h; M3 h" Cprogramming issues; chaired by an Assistant to the MDA Deputy for Acquisition/TMD, membership includes MDA TMD Directors, representatives of ) P, ?1 R2 t; ]1 Weach applicable Service Program Executive Officer, and TMD Executive Agents and Program Managers. Theater High Altitude Area Defense System , y4 F1 u2 u1 X4 N7 G9 L(THAAD) $ n. `) _+ c- S `& p$ i. oA ground-based, air transportable interceptor system that will provide wide area defense capability by intercepting longer-range missiles at higher altitudes and at greater distances. Will provide an overlay or upper tier to point defenses such as PATRIOT. & m- f& E+ [ r/ |" K7 xTheater Missile (TM) 5 Q; H2 |' U3 p+ C8 B# kA 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 1 a8 T! s: v" j( u6 Y& E3 vof attacking targets in a theater. $ n8 X7 @+ `( q* M8 {3 m* ZTheater Missile & @$ ?3 v. w& r u4 F8 I6 {& o* YDefense (TMD) OBSOLETE. The strategies and tactics employed to defend a geographical area outside the continental United States against attack from short-range, 2 M5 q! { V4 \7 _& L$ Eintermediate-range, or medium-range ballistic missiles. Theater Missile 2 t0 M+ k/ o, A) B4 S, ]: i8 cDefense Ground- Based Radar 0 `: z) F; I& t(TMD-GBR) S+ b% [0 D' W" q( a$ r, h8 I# GA ground-based, air transportable sensor that provides search, tracking and " \( Y- O, ]8 j" W% H" Q5 ediscrimination capabilities for the THAAD interceptor system. Also referred to as THAAD Radar. 3 _! |# |1 A8 n0 kTheater Missile 1 z% ]- r6 u5 M5 l6 c( w. h/ i# [( j0 ADefense 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 ! e7 v7 m, o6 f. j4 y G* _" _9 V0 m(Public Law 102–484) directed establishment of a TMDI office within the DoD. THEL Tactical High Energy Laser. ) `" {$ w! e! Q- m3 x$ FThermal Energy Electromagnetic energy emitted as thermal radiation. The total amount of thermal energy received per unit area at a specified distance is generally ! P% ~2 u/ ~7 `& O1 Sexpressed in terms of calories per square centimeter. , l, d9 D* ]3 I6 yThermal 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 & C. Y8 O0 m" ]1 @& b' Pthat structural components fail. Thermal Management & Y. \9 D" @+ ?! iTechnologies/techniques associated with the control and management of thermal energy, its generation, dissipation, and recovery. ! c8 C, x8 h& Z- n( c uThermal Radiation % u! s4 O# c8 u" k0 s) P6 iElectromagnetic 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 / V/ }; D* T1 N) E: p2 p7 }ultraviolet, visible, and infrared radiations. 6 ~/ h7 V6 s- y5 w+ FThermal X-Rays The electromagnetic radiation, mainly in the soft (low energy) x-ray region, emitted by the nuclear weapon residue by virtue of its extremely high / ^3 C. J2 o( ~+ s( ?, s7 Ttemperature; it also is referred to as the primary thermal radiation. It is the absorption of this radiation by the ambient medium, accompanied by an increase 4 Y$ a+ x: X* `! Y. j8 \3 min temperature, which results in the formation of the fireball (or other heated . Y& e5 w# V9 [region) which then emits thermal radiation. (See X-Rays.) MDA GLOSSARY, VER. 4.0 T 299 1 I' _( I' j/ i% I1 O( FThermosphere The atmospheric shell extending from the top of the mesosphere to outer space; it is a region of more or less steadily increasing temperature with height, starting 8 m; x% s6 s+ |at 40 to 50 miles (70 to 80 kilometers); the thermosphere includes, therefore, the exosphere and most or all of the ionosphere. Threat 1 l" y/ U" u1 p2 V6 a2 q% ?7 B8 {Characterization An assessment of the nature, magnitude and intent of an attack in progress. 8 r2 ^( m) P4 O8 ZThreat Corridor % `, l6 y' X' s3 n0 E# S9 o9 ~(Threat Tube) A 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 3 l: }- ~( C: n! V, U' rcomputation. * P9 U+ s# u7 V) {2 I3 sThreat Scenario A hypothetical example of the employment of threat systems against ballistic missile defenses for the purpose of analysis and evaluation of those defensive systems and architectures. & D' L* C9 z; k. ^6 S% DThreshold Performance capability or characteristic level in terms of a minimum acceptable value (threshold) required to satisfy the mission need and a performance objective. " }! f8 O7 C. d4 d, w. y$ B6 JThreshold * c( p' S+ k; C& `' l" B7 \$ R1 lDefense - [/ Q8 V1 ~, V! O' p" I( ZA 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. / x( t; T W" Q- }3 ^Thrusted Replicas (TREPS) Conical decoys equipped with a miniature rocket device. Generally used to change the decoy’s optical signature to resemble that of an RV in the reentry ; n, ~! z& t! ~phase. % o1 ^# p: {2 u2 L& g. v) ?TI (1) Technical Instruction. (2) Technology Insertion. + t: r% t3 P1 k2 H7 k" JTIARA Tactical Intelligence and Related Activities. TIBS (1) Theater Information Broadcast Service. $ l+ Y/ _" O+ {, j% d# x# r(2) Tactical Information Broadcast System. (3) Theater Intelligence Broadcast System. . \2 e& D# t. FTIC (1) Thermionic Integrated Circuit. (2) Technical Information Center. TIDP Technical Interface Design Plan. TIE (1) Technology Integration Experiments. (2) Technical Independent Evaluation. " @5 X8 R$ Z; RTier An integrated set of SDS elements that address a particular phase of the threat . M0 J' A5 u5 h, m9 W(e.g., boost phase). Tiered Defenses The use of defensive systems at different phases of the missile trajectory. TIES Technology Integration Equipment System. TIIAP Telecommunications and Information Infrastructure Assistance Program. TIL Technical Insertion Laboratory. TIM Technical Interchange Meeting. 4 E6 J$ P$ D& \7 T6 \MDA GLOSSARY, VER. 4.0 T 300 ! o G6 x, \1 `! YTime-Phased Force and / u9 x6 b3 w1 O. I9 v$ [- bDeployment List 6 M8 X- [# X4 K" K1 P2 ZAppendix 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 debarkation or ocean area. ; G4 Z6 `; R/ p8 Q2 O5 v2 F5 WTime of Flight 4 M9 H% F2 Y8 x7 Q4 [(Max) The maximum time for a booster or vehicle to perform its function from time of launch. Time on Station The time the sensor is in its operating position. 1 h& `' D; Z- W3 ?1 g/ d; e# FTime Sensitive # ^0 I! L( F" f% B# xTargets Those target requiring immediate response because they pose (or will soon pose) a clear and present danger to friendly forces or are highly lucrative, ; H' @3 j6 c) [, m bfleeting targets of opportunity.

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Time to Station The time required to move a sensor to its operating position. 0 A" K+ v" x5 ?1 z; u. n @2 DTIMS Training Integration Management System (USAF term). + y p- ^" s% K! `$ C( V3 rTIN Theater Intelligence Networks. 0 S s `) ?: \6 H* mTIP TOPAZ International Program. . S+ z6 j/ d4 o, m+ zTIR OBSOLETE. Terminal Imaging Radar. (Predecessor to Ground-Based Radar Terminal (GBRT).) TIRS Telemetry, Instrumentation and Range Safety 2 i2 i- I8 P( X, Y! ?5 VTIS (1) Trusted Information Systems, Inc. (2) Technical Information System. Titan USICBM. + u ?7 n6 Q$ C) h' JTIU TIBS/Tactical Interface Unit. TIWG Test Integration Working Group. (U.S. Army) TL Team Leader. # V6 d4 }* {; F7 t CTLA Time Line Analysis. - w5 c9 V7 J' Y) N& `) C0 bTLAM Theater land Attack Missile. ' N: `7 _2 R @* |! e! j* QTLAM/D TLAN [with submunition] Dispenser (Navy term). : m* L! M! S Z g" m0 t; gTLDD Top Level Design Document. # Z. ]' F, s1 Q. u1 O" YTLV Target Launch Vehicle. TLX Teletype. 9 X) M ` i1 V% ]' a# I" kTM (1) See Theater Missile. (2) Technical Manual. (3) Tactical Missile (US Army term). TMCC Test Monitor and Control Center. TMD See Theater Missile Defense. ; a$ ?" S" c# ~; R U$ Z' ^TMD C2 Theater Missile Defense Command and Control. , h: Q) ]- [* { v' A( JMDA GLOSSARY, VER. 4.0 T 301 - f' w* N+ @# {% Y: ^8 rTMD C 3 I Those assets that provide connectivity between and among Theater Ballistic ' ~0 |) D9 ]' d( s( fMissile Defense forces. ) p+ E9 a4 H: N: Q+ qTMD ESM Theater Missile Defense Existing System(s) Modification (MDA term). TMD GBR See Theater Missile Defense Ground Based Radar (THAAD Radar). }/ B/ p/ x( e9 _: sTMD IA Theater Missile Interoperability Architecture. TMD ITP TMD Integrated Test Plan. TMDAS Theater Missile Defense Architecture Study. TMDC Theater Missile Defense Council. TMDE Test Measurement and Diagnostic Equipment (ILS term). . s1 n! _3 W% d3 y: E6 k: OTMDI See Theater Missile Defense Initiative. : ?; [/ k# r: q9 M/ wTMDSE Theater Missile Defense System Exerciser. TMMM TOMAHAWK Multi-Mission Missile. TMP Technical Manual Plan (ILS term). # W1 ?; ~7 A( pTMPCU Tomahawk Theater Mission Planning Center Upgrade. 6 {2 B: K2 p6 J) z/ D' T+ Y3 ?. DTN (1) Terrestrial Network (C2E term). (2) Thermonuclear. TNF Theater Nuclear Forces [Treaty term]. TNT Trinitrotoluene. ; B i; I' x9 {0 cTNW Theater Nuclear Weapon. 5 ] x! {' t# P! C9 [TO (1) Task Order. (2) Technical Order. TOA Total Obligation Authority. TOAM Tactical Air Operations Module. TOC Tactical Operations Center. TOE Table of Organization and Equipment. 8 k( z. f# N: P& v5 wTOF Time of Flight. TOI Track of Interest. TOIA Task Order Impact Analysis. Tolerance The ability of a system to provide continuity of operation under various abnormal conditions. TOM See Target Object Map.

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Tomahawk US ground launched cruise missile. # l1 m1 Y: I- Q% p; L8 SMDA GLOSSARY, VER. 4.0 T 302 $ n L; `7 C RTOMD Task Radar Management Details. TOMP Task Order Management Plan. TOMS Total Ozone Mapping Spectrometer (NASA term). ) u1 x, ?$ T% F. zTOO Target of Opportunity. , w6 b# a" V: F. y$ dTOOL Target of Opportunity Launch. % x( w* I% j* ~( d# ZTOP Task Order Plan. Top-Down Pertaining to an approach that starts with the highest-level component of a : L1 H7 v. n) S+ {' h+ Ahierarchy and proceeds through progressively lower levels; for example, topdown design, top-down programming, top-down testing. Contrast with bottomup. * ~2 M0 E- ]' [# w8 S* |8 sTop-Down & _: W/ {5 Q! R5 ?' H& i# MDesign ! s0 L# r/ ?& X* y% r% eThe process of designing a system by identifying its major components, 6 y& G) v5 I8 @decomposing them into their lower level components, and iterating until the desired level of detail is achieved. ' m# z% t! O8 \Top-Down & O0 i* I/ A6 s& Y+ W& E/ c. I- P5 HTesting The process of checking out hierarchically organized programs, progressively, ; Q. t" r; {2 r l8 Z+ Mfrom top to bottom, using simulation of lower level components. * ~5 F+ ]$ J1 }# yTOPAZ A project to demonstrate the transfer of Russian thermionic space nuclear power technology to U.S. BMD applications. TOR Terms of Reference. TOS (1) Tactical Operations Shelter (Station). (2) Task Order Status. {; h0 z$ q6 X4 R4 i {TOT Time on Target Total Obligation Y" Q, J; U G' ^5 S' s# _Authority (TOA) , C$ M& l3 U+ |. L& p, O7 H" i3 OA DoD financial term, which expresses the value of the direct program for a given fiscal year. Total Quality Management (TQM) A management philosophy committed to a focus on continuous improvement to , j0 L4 R( n0 y9 o. ^: \product and services with the involvement of the entire workforce. , f3 f7 R# S: X+ [4 q' M2 DTOTS Target Oriented Tracking System ) y0 e( s- x; l8 ^. gTOVS TRIOS Operational Vertical Sounder. Toxicity The kind and amount of poison or toxic produced by a microorganism, or : i1 S/ \7 Y& C; dpossessed by a chemical substance not of biological origin. TP (1) Telenet Protocol (Telecomm/Computer term). (2) Test Program. + _- C; D9 V" C9 P l# T5 LTPALS Theater Protection Against Limited Strikes. 3 a' }' ]/ B2 m$ ]9 Q; u2 V, kTPBM Terminal Phase Battle Manager. TPD Mobile Tactical Radar (US). 6 l% |+ g1 N& q( FTPDR Total Processing Data Rate (TelComm/Computer term). + D: _7 [; O* P ~& ~MDA GLOSSARY, VER. 4.0 T 303 , \0 Q: i% }9 D) }+ w5 E7 a) ?& DTPEC THAAD Performance Evaluation Center. $ ?% ]/ u+ p( H2 A) I/ dTPEM Technology Program Element Manager (SDIO/MDA term). * X( t* y# @% y4 O/ K0 G$ ZTPFDD Time-Phased Force Deployment Data. TPFDDL Time-Phased Force Deployment Data List. L* P2 @0 O7 V+ J' TTPFDL Time-Phased Force Deployment List. TPM Technical Performance Measurement. TPMT Total Preventative Maintenance Time (ILS term). TPO (1) Test Planning Organization. (2) THAAD Program Office 5 c i2 ^9 u9 [* V+ I WTPP Test Procedure Plan. TPR (1) Terminal Phase Radar. (2) Trained Personnel Requirements. (3) Target Performance Report. TPS Thermal Protection System. . x6 ^; L. ]3 A9 j- oTPT Theater Planning Tool. TPWG Test Planning Working Group. (U.S. Air Force) , q8 j& e. h- t0 L7 F0 ?TQM Total Quality Management. Traceability (1) The characteristic of software systems or designs or architectures or 5 Q! X$ a, i& _* s# y9 Rdomain models that identifies and documents the derivation path (upward) and allocation/flowdown path (downward) of requirements and constraints. 6 _5 q( c/ [5 g& U% Y(2) The degree to which a relationship can be established between two or , g# q4 @1 x% V. H/ f6 ^more products having a predecessor-successor or master-subordinate 6 c3 }/ ^9 d1 d. K: C7 C4 E3 crelationship to one another.

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Track (1) A series of related contacts displayed on a plotting board. ' d- B; x- W% R(2) To display or record the successive positions of a moving object. (3) To lock onto a point of radiation and obtain guidance from. (4) To keep a gun properly aimed, or to point continuously a target locating instrument at a moving target. : a% Q# n/ U6 l+ y& E0 _, @$ d(5) The actual path of an aircraft above, or a ship on, the surface of the earth. + D3 ~5 l: m+ MTrack ' z3 j) f$ `& x4 h, @, U8 q- W% dAssessment 5 r0 q) b$ t' Z% B. aThe Track Assessment looks for anomalies in an object’s track data. An anomaly + [2 g- C& l5 H+ Ain the track may indicate a hit. ! I" G/ P) a+ y7 u- ^9 mTrack, Birth to 2 q* u3 E8 c Q% Z& t4 cDeath 8 I3 a. L& @. N4 |% |$ A5 G; @5 nThe maintenance of an associated track through all phases of flight (i.e., boost to reentry). Track Correlation The combining of track information for identification purposes, using all available data. / T* e" N7 K2 v* B6 v7 h& h8 A ZTrack Extension This term usually applies to improvements in track estimates by use of new data. It is sometimes used to describe a process of target extrapolation to a future time or place (e.g., reentry). + w( I: a- ?4 }3 hMDA GLOSSARY, VER. 4.0 T 0 p! J" ]2 t' u9 q9 x8 l304 / Z+ _9 f$ Z* Y" ^Track File A target’s stated estimate, confidence, covariance matrix, and associated LOS + Z% h% g0 K2 E% g' A* F: t0 {, vmeasurements with irradiances with confidence of association; or some subset of 5 }1 s# \( c$ t9 P1 A& ^the above. Track File-Track History , \# n/ S; ]$ ^A set of individual track reports on a particular object, which taken together 3 a( X$ i2 ^- _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 three-step process of data association, track initialization, and track improvement by filtering. 5 N0 u3 P0 I% p9 [( [. zTracking The act of generating and maintaining a time history of an object's position and ; @8 A# u1 k9 o+ P& |2 P( ^; Pany other features of interest. Tracking and Pointing ) F. ^: [6 u: x/ I# xOnce 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. 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 of an object. The process typically requires observation from a number of frames. Track Production 7 K' |: \6 }2 V+ M3 rArea An area in which tracks are produced by one radar station. - M& g, _* L$ _0 @$ l8 qTrack Symbology Symbols used to display tracks on a data console or other display device. Track Telling The process of communicating air surveillance and tactical data information between command and control systems or between facilities within the systems. / |! S2 P0 L/ @3 P/ q3 k( l5 N/ ~Telling may be classified into the following types: back tell; cross tell; forward tell; - n b- t& R3 e" F9 B) K+ llateral tell; overlap tell; and relateral tell. TRADEX Target Resolution and Discrimination Experiment. # t, M3 y3 J' V. l5 _4 `TRADOC U.S. Army Training and Doctrine Command, Ft. Monroe, VA. 7 M9 l, v% h, Q3 @; TTraffic Capability Maximum The maximum number of objects per unit time which the sensor system can 2 ?' t7 c2 J4 D7 f* b8 Pmaintain track files. 2 z) ?- h" u m: V2 u0 xTraffic Decoy Decoy that matches RV characteristics in the exoatmosphere and high endoatmosphere. & ?7 i6 i; E9 j" o/ N* Q& U. ~& tTrain Threat geometry with objects placed in a line (string) along the velocity vector of reentry. ; T; F$ u) s# V6 i! P$ pTrajectory The curve described by an object moving through space. Trajectory Histories Trajectory information on targets recorded over a period of time. TRAK A data base management system (not an acronym). 0 t* H: Z" o, m* i t( S* ZTrans-Attack Period from first tactical indication of attack until termination started, i.e., postattack. MDA GLOSSARY, VER. 4.0 T 305 TRANSCOM [U.S.] Transportation Command, Scott AFB, IL. TRANSEC Transmission Security. Transition The period in which the world strategic balance would shift from offensedominance to defense-dominance. & O" H* Y+ t( }9 G' o3 {Transition to Production ! R2 x9 f }3 u& d9 `. y6 vA risk reduction process during which the program shifts (passes) from development to production. It is not an exact point, but is described as a b+ F% R' O/ g- |0 d, _# gprocess consisting of disciplined engineering and logistics management to ensure the system is ready for manufacture. (See DoD 4245.7-M.) 0 a6 E1 z# d" Y5 kTransmission 9 o% t, y5 l% I* E' K* dSecurity d: M. W, d1 @/ q8 J0 H(TRANSEC) 8 o1 Z f$ T$ j J( oThat component of security, which results from all measures, designed to protect , J1 r& T) x z1 Y ~, o! @communications transmissions from interception and traffic analysis. (See COMSEC.)

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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 encountered when passing from subsonic to supersonic speeds and vice versa. 9 s; S" ]8 y* T: }Transponder A receiver-transmitter that will generate a reply signal upon proper interrogation. " I- b% O% I% G% H# Q+ I [6 PTRAP Tactical Receiver and Related Applications. 4 l; ~. F$ g/ K* VTrap Door A hidden software or hardware mechanism that permits system security % v, ^' z- c emechanisms to be circumvented. 0 d% P9 K T9 s+ Q+ T- I5 lTraveling Wave Tube (TWT) 9 X) c- K+ p) \An electronic tube in which a stream of electrons interact continuously or 1 m4 M+ K3 [ G5 k! nrepeatedly with a guided electromagnetic wave moving substantially in . U" A @2 T6 r8 ] Ysynchronism with it, in such a way that there is a net transfer of energy from the # P+ I/ k9 s3 c- k7 `$ g1 astream to the wave; the tube is used as an amplifier or oscillator at frequencies in 7 s3 T6 a9 T. u6 A$ {( n) Wthe microwave region. ! y$ g" ?1 N Q" dTraverse (1) To turn a weapon to the right or left on its mount. V: D; p- y! {3 D( j. P- g(2) A method of surveying in which lengths and directions of lines between : e3 H% I. k C1 ~ epoints on the earth are obtained by or from field measurements, and used in determining positions of the points. 3 h; _' V' p$ z2 y! uTraverse Level That vertical displacement above low-level air defense systems, expressed both as a height and altitude, at which aircraft can cross the area. ; P) Z \0 L {TRB Tactical Review Board. 3 q! a* N+ E/ M" hTRD Technical Requirements Document. Q$ E) ]" F" D# y2 x9 d: y9 N' ITRE Tactical Receive Equipment. TREA Transmit/Receive Element Array (THAAD). 8 z6 R0 [4 I' a8 x% g) fTREE Transient Radiation Effects on Electronics. 0 _* I8 ^, k/ @* [, X# a l9 VTREM Total Radiation Environment Model. TREPS See Thrusted Replicas. 8 i* j* ~( ^- V5 gTRESIM Tactical Receive Equipment Simulator. 7 L7 n8 \* o. o* XMDA GLOSSARY, VER. 4.0 T 306 TRG Threat Reference Guide. TRI-TAC Tri-Service Tactical Digital Communications System. TRIDENT Class of US ballistic missile submarines (USN term). " q1 p0 {- }; Q4 {, [3 Q' W7 ZTRIDENT I (C-4) US SLBM (USN term). 7 O/ v: f( D1 v, ~TRIDENT II (D-5) US SLBM (USN term). - ?' b6 {- ` q }. e9 V* N" k, iTRIM Toxic Reduction Investment and Management. TRM Technical Reference Model. , r" {; U9 I9 e5 l8 n- S; D/ ?TRMP Test Resources Management Plan. TRN (1) Task Requirements Notice. (2) Test Requirements Notification. Trojan Horse A computer program with an apparently or actually useful function that contains additional (hidden) functions that surreptitiously exploit the legitimate authorizations of the invoking process to the detriment of security or mission performance. TROPO Tropospheric Scatter. + t- D. D; p* U9 H3 P- ]3 WTropopause 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 tropics. (See Stratosphere, Troposphere.) Troposphere The region of the atmosphere, immediately above the earth's surface and up to the tropopause, in which the temperature falls fairly regularly with increasing altitude, clouds form, convection is active, and mixing is continuous and more or less complete. Tropospheric Scatter The propagation of electromagnetic waves by scattering as a result of ' L" b O) K6 S! e5 f" X/ d3 \irregularities in the physical properties of the troposphere. # L/ H1 S, A; K. ^0 \6 @TRP (1) Test Readiness Program. (2) Technology Reinvestment Program. 0 Q- j) x5 C; i( d' q2 ~(3) Technology Readiness Program (pre-acquisition program status). (4) Technical Requirements Package. TRPC Technology Readiness Planning Committee. TRR Test Readiness Review. Trusted Computer ' n) j. N" C' y1 ESystem/Software A system or its software that employs sufficient hardware and software integrity measures to allow its use for processing sensitive or classified information. * t1 w# G: s" s% g, g YTrusted 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 7 _$ v! L6 o0 R( w9 |of the Trusted Computing Base and cannot be imitated by un-trusted software. % C g& F2 a& u* C- vTRW TRW, Inc. ; a6 b/ g: J/ N+ ]TS (1) Terminal Service. (2) Top Secret. ; o- N' \. d5 S S# O& z0 T, I- l$ |3 cMDA GLOSSARY, VER. 4.0 T 307 & P8 m" { b7 A5 gTSA Technology Security Analysis. 5 e& q- F. A0 @) @0 A0 r2 Y8 D9 TTSD Tactical Surveillance Demonstration. TSCM Tomahawk Strike Coordination Module (USN term). ; K M/ l: A( @$ sTSD Tactical Surveillance Demonstration. TSDE Tactical Surveillance Demonstration Enhancement. TSEU Technology Seeker Evaluation Unit. 8 X7 J) X2 O; k0 xTsIAM Moscow’s Central Institute of Aviation Motors. * h% U$ X y$ z1 |% K7 ZTSM TRADOC System Manager. TSMA Theater of Strategic Military Action. 5 W2 ?( N% @1 rTSP Target Support Plan. 8 {3 D9 \( _0 J6 U" a* U6 Q0 GTSPI Time, Space, Position Information. TSR Target System Requirements.

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TSRD Target System Requirements Document. TSS Terminal Surveillance Sensor. TSSAM Tri-Service Standoff Attack Missile. 6 V. ], N) \4 Y+ qTSWG Target Signature Working Group. TT Total Time. 5 n3 V0 j) b+ K9 R- l9 ?& ^TT&C Telemetry, Tracking and Command. # s% O7 a; m0 L- Y: ZTT&E Technical Test and Evaluation (Army). 2 L6 ]8 ^7 D$ n+ A2 KTTA Total Time Accounting. TTBM 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, / M6 a' l ?, X/ R& o3 {9 b2 ?which have significant potential for improving testing. TTEL Tools and Test Equipment List (ILS term). ( t, B, o' R& M- x/ \+ Q0 Q8 UTTL Transistor-to-Transistor Logic. + E/ G; O* H% ]: f7 KTTP Tactics, Techniques, and Procedures. 4 w/ }# a* M( b: \% W; ?1 W, [TTSARB Technology Transfer and Security Assistance Review Board. 1 i3 K8 w0 J9 r# } A5 c7 ^TTT Test Technology Transfer. MDA GLOSSARY, VER. 4.0 T / J& U8 K- D5 M' u0 m308 TTV Technology Test Vehicle. 2 B8 D( a& A V. @) {1 d. f: c# @TTY Teletype. TUG TRACE User Group. TV Thrust Vectoring (rocker engineering term). # _' c, a* C+ K8 s7 D' t1 STVC Thrust Vector Control. TVE Technology Validation Experiment. TVM Track-via-Missile. 5 B% R2 g o2 |TVV Technology Validation Experiment. " S0 g# `! o: q# WTW Tactical Warning. TW/AA See Tactical Warning/Attack Assessment. TW/SD Tactical Warning and Space Defense. ; F$ Y* D& H$ r+ qTWG Technical Working Group. TWS TOMAHAWK Weapons System (USN term). TWT Traveling Wave Tube. TWTA Traveling Wave Tube Amplifier. (Electronic Engineering term). TY Then Year (PPBS term). TY$M Then Year Dollars Millions. Type A - System Specification States all necessary requirements in terms of performance, including test provisions to assure that all requirements are achieved. Essential physical 5 | k% g: k- w7 ^; r/ Aconstraints are included. Type A specifications state the technical and mission requirements of the system as an entity. Type B - ( s2 V& r# v: ^) @% DDevelopment Specification / O6 G, G* }2 E7 {- qStates all necessary requirements in terms of performance. Essential physical ; v8 W0 |0 [8 f xconstraints are included. Type B specifications state requirements for the ; A' [6 o% C' |' M4 e; odevelopment of items other than systems. They specify all of the required item A1 t/ k* S6 O. }functional characteristics and the tests required to demonstrate achievement of those characteristics. ( F H0 Z: z3 r7 Y' UType C - Product Specification Product specifications are applicable to any item below the system level, and may be oriented toward procurement of a product through specification of # u, n0 ~+ s0 b( ^6 uprimarily function (performance) requirements or fabrication (detailed design) ! Z* J$ p1 o; c- M8 M& Q4 u/ Drequirements. Type C specifications intended to be used for the procurement of items including computer programs. # W8 o% o6 o+ ~$ gTyphoon Class of Soviet ballistic missile submarines. Typing The act of recognizing objects by measuring a set of observables, computing a set of characteristics, and associating the characteristics with a specific class of . O. ?. C# Y1 D/ p6 q1 U, U1 |objects (i.e., SS-18, SS-24). - `$ a- O# N$ E$ l7 g- I7 m7 pMDA GLOSSARY, VER. 4.0 U , ^- ^, A* {# M% s309 U Uranium. U&S Unified and Specified [commands] (pre-1996 term). U.K (UK) United Kingdom. U.S. (US) United States. U.S. West U.S. West Incorporated. 4 g# Q7 ]$ I" bU.S.S.R. Union of Soviet Socialist Republics. UA User Assessment (NMD BMC3 term). UAE United Arab Emirates. UAV Unmanned Aerial Vehicle. UAV BPI Unmanned Aerial Vehicle-based Boost Phase Intercept. 5 l' A3 @$ ^( V, }+ p3 `, M: ~1 ]UCAP UAV Combat Air Patrol. 6 n9 e1 J+ ~2 Z, k2 m4 rUCC Uniform Commercial Code (US legal term). UCP Unified Command Plan. 5 [' M( j2 U5 |! J B" d" fUD/ASD United Defense/Armaments Systems Division. $ i# q# P8 E/ J# VUDMH Unsymmetrical Dimethylhydrazine (a liquid propellant rocket fuel). - H3 s! G& ~% m! @) h9 kUDS Universal Documentation System. A standardized comprehensive tool for stating 5 i; o) W+ L7 S$ Uand coordinating program requirements for testing MRTFB ranges, as well as the capabilities and plans of test ranges to support program requirements. It 4 d) f/ T4 j7 R2 Aconsists 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) & e0 v1 z/ K5 \7 mOperations Requirements (OR), 5) Program Support Plan (PSP), and 6) the Operations Directive (OD). The UDS was developed and is regulated by the + b( ^% x: a R& lRange Commanders Council (RCC).

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UE Unit Equipment. + C6 { t% O7 t/ w, XUEME Unified Electro-Magnetic Effects. " H: b& e' T7 CUEWR Upgrade Early Warning Radar. E0 P6 J! I5 [9 rUF4 Uranium tetra fluoride. ! M# A; W, j* s! rUF6 Uranium hexafluoride. MDA GLOSSARY, VER. 4.0 U 310 UFG User Focus Group. UFO UHF Follow-On [Satellite Communications System]. 1 @7 k) `/ _6 _' a* Y _) Y& aUFP Unit Flyaway Price. * s1 N# P% V/ A: c1 H7 b" s# kUGF Underground Facility. UGS Unattended Ground Sensors. + U# X% T; Q6 R( s$ _2 P7 V& \UGT Under Ground Test. ! U: V, m+ v0 ]" |1 L* yUHF Ultra High Frequency. + E* @2 K* ?% Q% o% N- iUIC Unit Identification Code. ) o' W# j" L5 Q; P M8 b" h% }UIN User Interaction Node. & K% r8 t$ n3 g% G) wUKAS (1) UK Architecture Study (2) UK Associate Studies. - f0 A3 R/ L( d5 u$ s& TUKEADTB UK Extended Air Defense Test Bed. 3 g! G1 t" k% I; t3 I, K& L1 v2 BUKTB United Kingdom Test Bed. & A! i; V# T4 |& K- [' k1 d, N8 wULCS Unit Level Circuit Switch (SINCGARS term). 1 j& a0 N% b/ j. T0 F# @ULS Unit Level Switch. : f4 A% R; d" C r- XULSA Ultra Low Sidebobe Antenna. : `; W$ |% M. g: AULTDS Unit Level Tactical Data Switch (SINCGARS term). , ^8 H% ?; ?2 I1 D- NUltraviolet (UV) Electromagnetic radiation of wavelength between the shortest visible violet (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). 5 Z( G w; \+ Q' Q2 T+ C6 o m" WUNAAF Unified Action Armed Forces. UNC United Nations Command. 4 D* N/ k5 O, q7 ~) iUnconventional ( i' ]0 Y: ?0 t% Z: H# CWarfare : ~3 X& k B( J' m$ rA broad spectrum of military and paramilitary operations conducted in enemyheld, enemy-controlled or politically sensitive territory. Unconventional warfare ) t( y/ W0 n+ A8 [5 Gincludes, but is not limited to, the interrelated fields of guerrilla warfare, evasion " t- j6 `5 j. i5 o$ j/ k- h8 z: sand escape, subversion, sabotage, and other operations of a low visibility, covert, or clandestine nature. - c% S; s6 J- D. o7 r4 GUnified Action . s' f7 n* |: h9 QArmed Forces A publication setting forth the principles, doctrines, and functions governing the activities and performance of the Armed Forces of the United States when two or ' A0 Q% D ~, T9 [& W$ T+ A- Nmore Services or elements thereof are acting together. Unified 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 of Defense with the advice and assistance of the Joint Chiefs of Staff. $ f$ I" N% a/ X0 b. r' S9 pMDA GLOSSARY, VER. 4.0 U / }* k8 d- M) y+ r3 v% N$ O" w H- s( e311 : c3 s" Y2 }6 E- d9 ~4 A) ?UNISYS UNISYS Corporation. * u3 r; \+ V9 O5 t) D0 xUnited States Army Space Command (USARSPACE) The Army component command of USSPACECOM. Responsible for the Army elements of the SDS system. Located in Colorado Springs, CO. & d) ]6 ]7 t) D5 n; GUnited States Space Command ; b* |8 L% W) q(USSPACECOM) , @' i/ |2 ]% U- d% F4 d U% ^The unified command responsible for planning and conducting ballistic missile defense. Located in Colorado Springs, CO. United States @( u. H# s, `9 |Strategic Command (USSTRATCOM) 5 Y2 O2 L' Q. e: L- @: @" ` o6 qThe DoD unified command responsible for carrying out directed nuclear and nonnuclear strategic air, intercontinental ballistic missile, and sea-launched ballistic ' I5 K0 f* d% Jmissile offensive combat strikes. Located at Offutt AFB, NE. . T* D7 T* }. HUnited States Transportation Command (USTRANSCOM) . [7 S% d) e9 GThe DoD unified command responsible for providing air, land, and sea ) d2 v0 W8 K0 V+ T. W* e1 Qtransportation 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 on a global basis, as directed by the Secretary of Defense. Located at Scott AFB, IL.

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Unk Unknown. Unresolved Objects 3 F ?" Q* ~6 P. ~1 g' {Objects so closely spaced with respect to the sensor focal plane as to be : e0 G, R! Z% A, Zindistinguishable from a single object. UNSC United Nations Security Council. : q1 X" \7 j8 [% `UnSecEnergy Under Secretary of Energy. % d2 A* K9 ^/ O, Q3 Q! Z; W1 f8 DUOC Usable on Code (ILS term). UOES See User Operational Evaluation System. UPD Unconventional Passive Discrimination. ) U* K/ F8 n; n' Z- f4 |UPS Uninterruptible Power Source. - ]- r, |1 f6 i8 L, G) i4 |UQT Unit Qualification Training (ILS term). URIP University Research Initiative Support Program. " L8 n# [0 d8 G! @5 iURL Uniform Resource Locator (internet protocol term). & ^) x; y! k, a- y* FURT Upgraded RTD. US/UK United States/United Kingdom. USA (1) United States Army. (2) Under Secretary of the Army. USAADASCH U.S. Army Air Defense Artillery School. USAAE U.S. Army Acquisition Executive. 8 ^" R' @3 i2 u) W0 rMDA GLOSSARY, VER. 4.0 U 312 USACE United States Army Corps of Engineers. % ?9 s* H/ O4 J* a; o* b4 h. pUSACOM United States Atlantic Command, Norfolk, VA. 2 [5 A0 h1 V" u5 g; ]USAF United States Air Force. 4 j5 F. s' f* S+ HUSAF/AFMC/ESC U.S. Air Force Materiel Command, Electronic Systems Center; ex-ESD. + Y3 T0 C- n) ^) x& R9 GUSAF/AFMC/SMC U.S. Air Force Materiel Command, Space and Missile Systems Center; ex-USAF Systems Command /SSD. USAF/OTEC U.S. Air Force Operational Test and Evaluation Center. USAF/SMC U.S. Air Fore Space and Missile Systems Center, Los Angeles AFB, CA. USAF/SSD U.S. Air Force/Space Systems Division; See USAF/AFMC/SMC. 4 }) S( o+ ?. s6 p! {# P6 uUSAFE U.S. Air Forces in Europe. USAFLANT U.S. Air Force, U.S. Atlantic Command. % n" T# W" F8 U# D( ?' sUSAKA U.S. Army Kwajalein Atoll. USAMICOM U.S. Army Missile Command, Redstone Arsenal, AL. USAMSIC See MSIC. 9 Y% y }1 h* p# x& mUSAMSAA U.S. Army Materiel Systems Analysis Activity. 9 X, ]! I ]0 FUSAOEC U.S. Army Operational Evaluation Command, Alexandria, VA. USAOTEC U.S. Army Operational Test and Evaluation Command. U0 u. m% u% ]9 e& \: zUSARCENT U.S. Army Forces, U.S. Central Command. USAREUR U.S. Army Forces, U.S. European Command. USARLANT 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). . s' P$ v, p" S6 m1 G( T2 z. L' ]USASSDC U.S. Army Space and Strategic Defense Command, Huntsville, AL USATECOM U.S. Army Test and Evaluation Command. T1 M9 B2 g$ Q. k/ `: h* ]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 : x' V9 x6 }2 `7 ?4 m3 h2 b313 1 E; E( ^, O# s) wUSCENTCOM United States Central Command, MacDill AFB, FL. USCG United States Coast Guard. 6 J* S8 m. a( jUSCINCCENT Commander in Chief, U.S. Central Command. USCINCEUR U.S. Commander in Chief, Europe. 3 n8 |- e v0 ]' {: c. UUSCINCLANT Commander-in-Chief, U.S. Atlantic Command. USCINCPAC Commander-in-Chief, U.S. Pacific Command. USCINCSPACE Commander-in-Chief, U.S. Space Command. USCINCTRANS Commander in Chief, U.S. Transportation Command. USCS U.S. Customs Services. 4 f8 t4 \9 [( L) {& H2 J, n4 oUSD Under Secretary of Defense. U3 V9 M0 A& TUSD(A&T) Undersecretary of Defense (Acquisition and Technology). - L) Z( M; r5 @; \! e5 w0 WUSD(A) OBSOLETE. Under Secretary of Defense (Acquisition.). ) V7 I" F9 `& R- g8 d- E- _$ dUSD(A)/STNF Under Secretary of Defense, Acquisition, Strategic and Tactical Nuclear Forces. USD(P) Under Secretary of Defense for Policy. USDA United States Department of Agriculture. USDAO U.S. Defense Attaché Office. $ m0 S2 L" {4 D7 cUSDELMC U.S. Delegation to the NATO Military Committee. ' J ~& p4 g8 n- p9 o9 ZUSDR&E Under Secretary of Defense for Research and Engineering. User Friendly Primarily a term used in automatic data processing (ADP); it connotes a machine ! o! H* `8 _0 ~% C2 g4 ~(hardware) or program (software) that is compatible with a person's ability to & O" B' V3 Y2 m, joperate it successfully and easily. User Operational Evaluation System (UOES) + V9 L$ S3 b/ C7 yPrototypical system developed and tested as part of the early phases of the development process. A UOES has two objectives: (1) testing, evaluation, and 3 u: _/ ^; b* @: r7 U2 m( straining for a system proceeding through the normal acquisition process; and (2) contingency defense capability should the need arise prior to completion of the normal acquisition cycle. , F5 i- N+ Q" Q! lUSEUCOM United States European Command, Stuttgart-Vaihingen, Germany. USFJ U.S. Forces Japan. 5 z3 H' r% d6 a7 S: P( v5 @9 W- WUSFK U.S. Forces Korea. 1 p. @4 Q* Q9 R6 { ^: k# zUSFK/CFC CSFK Combined Forces Command. USG U.S. Government. USIA United States Information Agency.

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MDA GLOSSARY, VER. 4.0 U 7 W" x2 j* y9 ]2 {: \0 P314 & Y6 P* g1 B* d6 MUSLANTCOM United States Atlantic Command (Now see USACOM). / n( ]. X8 N2 R4 B5 ?3 e( M: ?$ ^USLANTFLT U.S. Atlantic Fleet. USMAR- FORCENT U.S. Marine Component, U.S. Central Command. ( E( A0 r' \/ @5 `" uUSMAR-FORLANT U.S. Marine Component, U.S. Atlantic Command. USMAR-FORPAC U.S. Marine Component, U.S. Pacific Command. + z2 z7 t9 A* H1 oUSMC United States Marine Corps. USMCR United States Marine Corps Reserve. # M8 J7 p2 Q+ e2 q4 h8 m( c+ RUSMILREP U.S. Military Representative. USN United States Navy. USNAVCENT U.S. Naval Forces, U.S. Central Command. USNAVEUR U.S. Naval Forces, U.S. European Command. T( h7 w% [* I( e0 A0 ?4 w$ o, EUSNIP U.S. Naval Institute Proceedings. ) W/ K3 T8 f& m8 J+ @! b X: tUSNO U.S. Naval Observatory. 5 R: ]% B; q" r" o" R* J* }4 x8 nUSNPGS U.S. Naval Post-Graduate School. USPACAF U.S. Air Forces, U.S. Pacific Command. % g- _8 D4 l9 {8 b+ v' zUSPACFLT US Pacific Fleet. 6 O! q. ^4 h& V$ dUSPACOM United States Pacific Command, Pearl Harbor, HI. F e* u5 w- e9 ]2 \' M9 UUSREPMC U.S. Representative to the Military Committee (NATO). USSC United States Space Command. USSOCOM United States Special Operations Command, Tampa, FL. USSOUTHCOM United States Southern Command, Panama Canal Zone, Panama. * r& S0 n2 F8 H. _! O6 u& b, BUSSPACECOM See United States Space Command. USSS United States Secret Service. " `. E4 n Q7 j% z8 w0 [USSTRATCOM See United States Strategic Command. 7 h. E! m; D! ?4 n5 L" e6 `7 u: s4 ?USTA United States Telephone Association. ; C% _- n8 H b* y& GUSTRANSCOM See United States Transportation Command. $ }% W8 D( L: o( DUT Universal Time. - B. J9 \! M5 XUTC Unit Type Code. $ ^( D( {1 l) k5 X: d( m; i% ?: j; WMDA GLOSSARY, VER. 4.0 U 315 UTM Universal Transverse Mercator. ( v c6 H: W1 {& Z |UTTMDS Upper Tier Theater Missile Defense System. See THAAD System. UUT Unit Under Test (ILS term). $ |# e1 }* {1 s$ kUV Ultraviolet. UV Electro- Optics Technologies/techniques employed by optical sensors in the wavelength ) k1 x& S. H/ h, w$ _+ Vspectrum shorter than visible (e.g., less than 4,000 A). UVPI Ultraviolet Plume Instrument. UW Unconventional Warfare. " p$ X2 y, p& w/ P3 W* BMDA GLOSSARY, VER. 4.0 V % U9 p. T' b* i% A8 Q9 M316 V Volt. 4 @4 q9 o# C/ a1 b CV&H Vulnerability and Hardening. V&V Verification and Validation. (See Verification, Validation, and IV&V.) V/STOL Vertical Short Takeoff and Landing [aircraft]. ( ^, }! K9 T3 F6 w# O, A" sVAFB 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. VAMOSC Visibility and Management of O&S Costs. $ ^* w |! S. ^VAR Visitor Access Request. Variability 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 7 N7 m( a7 z9 q+ L0 @/ [: E5 W: w, `factor introduced to average the effects of orientation, minor shielding, and 9 `& ~. ~5 _9 ]7 n; J2 uuncertainty of target response to the effects considered. VBO Vertical Burn-Out (velocity). - W/ M- }$ S' G9 d0 |VCC Voice Communications Circuit. VCRM Verification Cross Reference Matrix. VCS Voice Communications System. " K- \* u% p: m" J5 A3 {VDC Volts Direct Current. VDD Version Description Document. ( Z" x- R' f6 m) g- j/ M CVDU Visual Display Unit. VE Value Engineering. ( A; L0 F1 h# q5 s* |VECP Value Engineering Change Proposal. V% a) u1 I- ^/ L* r$ o' r ?% O* OVerification (1) Confirmation that all data inputs, logic, calculations and engineering representations of a T&E resource accurately portray the characteristics, 0 g& q' n2 \8 M- kcalculations, 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. + T O( f7 d4 yVESA Video Electronics Standards Association. VFR Visual Flight Rules. VGA Video Graphics Array (Telecomm/Computer term). VHF Very High Frequency. VHSIC Very High Speed Integrated Circuit. MDA GLOSSARY, VER. 4.0 V ( U" Z5 e" B, t6 S; W9 [317 * ^# z W) a& `0 x% }. EVIDS Vehicle Integrated Defense Software (USA term). VIGILANTE Viewing Image/Gimbaled Instrumentation Lab-Analog Neural Three-D " s5 t8 g& u% ~Experiment. VIGILANTE involves building a small computer (ANTE) offering 1/12 3 w2 H3 d+ o4 h" jOperation Per Second (OPS), using a mixture of experimental three-dimensional circuitry and commercial components. Project also demonstrates VIRGIL, a - P, t6 _. m/ E# ?gimbaled airborne sensor with visible, experimental UV and quantum-well IR ! L7 F0 U( l; K8 P3 [cameras capable of tracking targets that can be detected, identified, and - I: r; A% P5 p; q1 c( ]9 Rprecision-tracked with the ANTE processor. ( b7 v" n; ~9 A4 J& c4 TVIM Vibration Isolation Module. VINSON Encrypted Ultra High Frequency Communications System. VIS Visible. . |5 L1 _& z& }! SVIS/UV Visible/Ultraviolet. Visibility Range (or Visibility) 6 k K T( O3 [( UThe horizontal distance (in kilometers or miles) at which a large dark object can just 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 exceptionally clear atmosphere to 0.6 mile (1.0 kilometer) or less for dense haze $ H! f. W: @2 `or fog. The visibility on an average clear day is taken to be 12 miles (19 kilometers). , V |- o+ S1 w% Q; Q! sVisible Electro- Optics 3 A; Q* S$ e# b* y" h( [% yTechnologies/techniques employed by optical sensors in the visible portion of ' _* x, q9 R5 O; F4 ?% Uthe wavelength spectrum. VLAR Vertical Launch and Recovery (UAV JPO term). + b% a7 R; u( y& ?VLF Very Low Frequency. VLOS Vertical Line of Sight.

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VLS Vertical Launch System. ( C, g2 K n% _/ I0 g0 O# qVLSI Very Large Scale Integration. 7 d1 y, w- ^* N$ x; HVLSIC VLSI Circuits. 2 r' n9 N/ M' W! K+ @VLWIR Very Long Wavelength Infrared. : U) Y# v- f' O0 k' w6 nVME Versa Modular European [standards]. 7 }3 B, v* E. i3 `) hVMF Variable Message Format (Telecomm term). VOX Voice Actuation. " \$ U* @- x. J' qVRI Vanguard Research, Inc., Fairfax, VA. 9 c1 R& k0 y6 r$ r( mVTC Video Teleconference. VTOL Vertical Takeoff and Landing [aircraft]. VTOL-UAV Vertical Takeoff and Landing Unmanned Aerial Vehicle. VUE Visible Light/Ultraviolet Experiment. 4 O5 |* g; w' U" [. l5 Q1 i3 kMDA GLOSSARY, VER. 4.0 V 318 4 q; v0 f4 X; U4 I4 K! k% aVulcan UK bomber. VV&A Verification, Validation, and Accreditation. VVER Pressurized water type nuclear power reactor. VVIRF Verification and Validation Information Request Form. MDA GLOSSARY, VER. 4.0 W " F# Z- U: c( [% l319 W/ With. * [+ x e7 z, M8 u* v9 @ qw/o Without. W/TD Warning/Threat Detection. WAA Wide Aperture Array. WALEX Warfare Analysis Laboratory Exercise. & c) q; ~" V/ ]WAM (1) Worldwide Military Command and Control System (WWMCCS). (2) Wide Area , G% e. f0 o; n6 [7 w* ]Munition. (3) Wide Area Mine. (4) Wide Area Missile. WAN Wide Area Network (Telecomm/Computer term). 6 M$ p6 U0 ]& D, J7 b+ e4 _WAP Wide Azimuth Probe. 9 p: a* L! m, n, BWar 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 # z# p* j! N* S+ ~3 P% v2 Q4 U/ M& _" {or assumed real life situation. Wargame 2000 Title of MDA program for development of a state-of-the-art simulation tool at the JNTF for use in CONOPS validation, missile defense program design verification, 4 O- a9 F$ ? C/ J4 Cvalidation and accreditation, and support CinC/Allied wargames and assessments. - `& l2 j. @# n4 ~& TWarhead A weapon, usually thermonuclear, contained as the payload of a missile. Warhead 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 components. $ B" c& {5 [! P) h& ~$ ]WARM Wartime Reserve Modes. # z, F( U& I2 V; ~: P* YWarning of Attack A warning to national policymakers that an adversary is not only preparing its l! g* n8 w+ a( i& p& C) garmed 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. 1 }$ R! g1 a& kWARSIM Warfighter Simulation (US Army term). $ p; V- z/ Q$ |' ~8 o2 jWARSIM 2000 Warfighter Simulation 2000 (US Army term). * a5 {+ X$ u% L/ C& JWartime Reserve Modes (WARM) Characteristics and operating procedures of sensor, communications, navigation ! N) t' r4 D* }* R0 h6 n j* haids, threat recognition, weapons, and countermeasures systems that (1) will ! C; Y; l# F* b: T' V& g( kcontribute to military effectiveness if unknown to or misunderstood by opposing 5 S! Y4 _5 s- t0 ^- J0 g! R( e% Lcommanders before they are used, but (2) could be exploited or neutralized if known in advance. Wartime reserve modes are deliberately held in reserve for wartime or emergency use and seldom, if ever, applied or intercepted prior to 3 e' U1 m+ ]3 [* Csuch use. : P* u& I/ K& D6 v9 HWAS Wide Area Sensor. % o3 S ~) B% y- e' ?$ t, ^WASP Wide-body Airborne Surveillance Platform. A modified DC-10. MDA GLOSSARY, VER. 4.0 W 320 0 }5 D. Y' a( j+ ]! u/ ]. K* ?! gWASHDC Washington, District of Columbia. $ F0 p# A9 x6 |0 n9 FWastage (Max) The maximum number of defense weapons which, when used, will be ineffective in contributing to the defeat of the offense. Watch Condition (WATCHCON) Series of readiness conditions used by the intelligence community to alert staffs to watchfulness without raising DEFCON. WATS Wide Area Telephone System. 2 I3 t, A' ^% v1 R @WAVE Wideband Angular Vibration Experiment. # T. H5 w7 s- |5 l* VWavelength 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. WB Wideband. WBM Weapons Battle Manager(s). 2 r2 G k2 H' A8 |8 \5 JWBS See Work Breakdown Structure. WCC (1) See Wing Control Center. (2) Weapons Control Computer. WCG Workstation Computer Graphics (Computer term). * C; Q& b5 K+ D3 E" m! VWCP (1) Weapon Control Processor. (2) Weapon Control Platform. & u! _' V9 ^ XWCS Weapons Control System. WDM Wavelength Division Multiplexon. Weapon Enabling The set of control functions without which defense weapons cannot be launched.