航空缩略语词典

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MDA GLOSSARY, VER. 4.0 T 298 , V0 w5 `, K4 M2 s& p8 s: F5 I4 _Theater 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 , j; C7 p, v5 Z8 W4 N7 zAcquisition/TMD, membership includes MDA TMD Directors, representatives of each applicable Service Program Executive Officer, and TMD Executive Agents 0 c7 U. \2 H8 x+ s0 e) b. Tand Program Managers. Theater High Altitude Area Defense System % ?$ R5 v- Y& \5 w7 q U(THAAD) A ground-based, air transportable interceptor system that will provide wide area # `( d6 X9 o! [7 o" S3 ^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. + f& @+ T: B6 A6 s1 ~0 hTheater Missile 9 ~% m7 l/ x: D(TM) 4 [4 p6 A/ a0 E( Y' u6 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 of attacking targets in a theater. Theater Missile Defense (TMD) * j( T; r& m& L) _; [OBSOLETE. The strategies and tactics employed to defend a geographical area outside the continental United States against attack from short-range, ' k, h# r8 Y# ~, i5 Qintermediate-range, or medium-range ballistic missiles. Theater Missile ; P( H3 _% A0 t' G$ I* A- H' }Defense Ground- 1 C& v/ A- G4 E K% A' y$ x- YBased Radar ) p% s& O3 m _(TMD-GBR) A ground-based, air transportable sensor that provides search, tracking and . t, z/ Q; h, F1 Pdiscrimination capabilities for the THAAD interceptor system. Also referred to as 8 X& ]" M4 \( d; I" B3 KTHAAD Radar. Theater Missile Defense Initiative (TMDI) An initiative under which all DoD theater and tactical missile defense activities are & E* }1 B8 f& k$ D+ Y1 {8 hcarried out. Section 231 of the National Defense Act for Fiscal Year 1993 $ j J# Z: A3 A, n: s6 T9 H/ E(Public Law 102–484) directed establishment of a TMDI office within the DoD. / r: t: D7 }# U4 CTHEL Tactical High Energy Laser. . k) c' ?$ q2 [0 l' [/ xThermal Energy Electromagnetic energy emitted as thermal radiation. The total amount of thermal energy received per unit area at a specified distance is generally . D+ P W1 \; n! Qexpressed in terms of calories per square centimeter. * E! [* \0 w1 _$ qThermal 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 that structural components fail. 7 \3 g1 \: N0 x" H" u: |Thermal : \' V& a0 T7 _& t3 PManagement 1 x: e, T9 b' i$ H/ [Technologies/techniques associated with the control and management of 8 D) e. ^$ O; mthermal energy, its generation, dissipation, and recovery. Thermal Radiation Electromagnetic radiation emitted (in two pulses from a nuclear air burst) from the ( d4 F9 P/ E; l6 a/ V) Sfireball as a consequence of its very high temperature; it consists essentially of 4 N% c. z- Y4 R: u0 @6 S; eultraviolet, visible, and infrared radiations. Thermal 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 temperature; it also is referred to as the primary thermal radiation. It is the s9 g7 m, _" ^ @0 R3 Aabsorption of this radiation by the ambient medium, accompanied by an increase in temperature, which results in the formation of the fireball (or other heated 6 {/ B7 _0 E' u9 rregion) which then emits thermal radiation. (See X-Rays.) ' U/ V' k7 j6 KMDA GLOSSARY, VER. 4.0 T 7 v- `9 c+ [: Q: b' n; I299 Thermosphere The atmospheric shell extending from the top of the mesosphere to outer space; ' ~2 E: |. A1 \" q" m- dit is a region of more or less steadily increasing temperature with height, starting 5 Q' ?6 F" H/ G" Jat 40 to 50 miles (70 to 80 kilometers); the thermosphere includes, therefore, the exosphere and most or all of the ionosphere. _- C) U9 g3 W/ Y+ r. l- r8 R+ {) VThreat 1 b3 R6 {) n: {% O& X% |Characterization An assessment of the nature, magnitude and intent of an attack in progress. , o+ `/ M1 i) U* w5 t. fThreat Corridor (Threat Tube) $ b N: J3 f' z0 Y: @( i2 }A tube containing all the objects originating from launch sites and aimed at l1 U7 e5 G$ |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. 5 I- P% `/ T' T: ]0 e- h1 vThreat 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. & n2 e4 {* ^8 O4 e4 sThreshold Performance capability or characteristic level in terms of a minimum acceptable 5 o2 n, p! p' I; K3 g& {7 [8 @6 fvalue (threshold) required to satisfy the mission need and a performance objective. Threshold Defense , V9 A/ {3 u* Q/ f4 ^! Q% nA defense strategy that concedes that the target can be destroyed at a price g) h u% S8 v( T, k: J6 Ethat is not prohibitive, but the presence of the defense is thought to require the - ^4 f6 S$ }" w9 X5 O% U xoffense to mount a relatively large and complex attack. % X: \. p2 Y. R& o' ^1 {! gThrow Weight All weight in an interceptor, above the sustainer, which serves as the kill vehicle. Thrusted : p" _/ V) [; M( Q' O- YReplicas (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 phase. $ z- x6 ^! Z+ J* Z, S) G+ CTI (1) Technical Instruction. (2) Technology Insertion. ( n. v; y. l D3 m# K$ w8 PTIARA Tactical Intelligence and Related Activities. " e( x R, g. P1 CTIBS (1) Theater Information Broadcast Service. (2) Tactical Information Broadcast System. * H/ e' V3 Z( C3 \9 ](3) Theater Intelligence Broadcast System. TIC (1) Thermionic Integrated Circuit. (2) Technical Information Center. . d; @, i1 N! j( }* d: FTIDP Technical Interface Design Plan. TIE (1) Technology Integration Experiments. (2) Technical Independent Evaluation. Tier An integrated set of SDS elements that address a particular phase of the threat (e.g., boost phase). + e- q8 y- l! o$ ~! t& STiered 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. D* f j4 e/ g/ H" STIL Technical Insertion Laboratory. 2 j6 d0 v* x& i5 l3 {& hTIM Technical Interchange Meeting. 6 l' G# e& m) h# l4 LMDA GLOSSARY, VER. 4.0 T " o. F h7 G6 B300 0 y% P) `4 K, ^Time-Phased Force and 5 U# c1 W; D3 @6 T% x4 O6 v jDeployment List Appendix 1 to Annex A of the operation plan. It identifies types and/or actual 6 x2 w" `/ _4 I* x$ }2 s. X# zunits required to support the operation plan and indicates origin and ports of 5 q0 u) N t t2 O, W" Vdebarkation or ocean area. Time of Flight (Max) ' W, w3 F% O; B" I3 ?2 O9 y$ c- WThe maximum time for a booster or vehicle to perform its function from time of launch. 2 z# \2 q, N. Z, i' \Time on Station The time the sensor is in its operating position. . h$ D: H1 P' ~* STime Sensitive Targets Those target requiring immediate response because they pose (or will soon ) \ Z; {: G( g, l* Qpose) a clear and present danger to friendly forces or are highly lucrative, fleeting targets of opportunity.

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Time to Station The time required to move a sensor to its operating position. ! F8 ?7 M% u( LTIMS Training Integration Management System (USAF term). 1 {6 l+ L8 h8 W* bTIN Theater Intelligence Networks. : ^4 \6 P, D3 S; U }( N/ q3 HTIP TOPAZ International Program. TIR OBSOLETE. Terminal Imaging Radar. (Predecessor to Ground-Based Radar & O: ~/ A( l, }: |. N( Q# @Terminal (GBRT).) TIRS Telemetry, Instrumentation and Range Safety / {( J) v1 }+ G7 Q8 uTIS (1) Trusted Information Systems, Inc. (2) Technical Information System. 1 s. m. W+ I( v, \9 \. {# HTitan USICBM. TIU TIBS/Tactical Interface Unit. TIWG Test Integration Working Group. (U.S. Army) TL Team Leader. TLA Time Line Analysis. TLAM Theater land Attack Missile. , Q; V! V1 s1 K j# kTLAM/D TLAN [with submunition] Dispenser (Navy term). " h& M; D1 p" ` v9 l( \TLDD Top Level Design Document. & a2 u7 ]% p% u6 F: U' MTLV Target Launch Vehicle. / T0 D$ q( m7 x% v3 R0 GTLX Teletype. TM (1) See Theater Missile. (2) Technical Manual. (3) Tactical Missile (US Army term). TMCC Test Monitor and Control Center. : G5 n9 k6 t) U x5 \TMD See Theater Missile Defense. TMD C2 Theater Missile Defense Command and Control. ; _# v* Y' L* f: K8 ]% RMDA GLOSSARY, VER. 4.0 T 301 TMD C Q; Y: ^/ _8 `+ @3 2 T# p! r. X8 a8 z5 R {4 RI Those assets that provide connectivity between and among Theater Ballistic ( N. s( V& c; e$ ^Missile Defense forces. TMD ESM Theater Missile Defense Existing System(s) Modification (MDA term). & h' `; I+ Q3 }0 n- y5 l4 NTMD GBR See Theater Missile Defense Ground Based Radar (THAAD Radar). TMD IA Theater Missile Interoperability Architecture. TMD ITP TMD Integrated Test Plan. TMDAS Theater Missile Defense Architecture Study. - b% o% Q O# q; M9 k) f: RTMDC Theater Missile Defense Council. 3 k+ v, @8 z( a6 dTMDE Test Measurement and Diagnostic Equipment (ILS term). : g0 W9 G; }5 F# K5 {TMDI See Theater Missile Defense Initiative. TMDSE Theater Missile Defense System Exerciser. 8 k3 U- r2 D; w& pTMMM TOMAHAWK Multi-Mission Missile. * V6 i$ e0 h) _1 O4 u! ?TMP Technical Manual Plan (ILS term). TMPCU Tomahawk Theater Mission Planning Center Upgrade. TN (1) Terrestrial Network (C2E term). (2) Thermonuclear. TNF Theater Nuclear Forces [Treaty term]. 4 X: X5 G. J7 n1 YTNT Trinitrotoluene. % U+ \+ A, [/ d L- F0 ^TNW Theater Nuclear Weapon. 1 e8 m$ H8 F6 x8 u) C( VTO (1) Task Order. (2) Technical Order. TOA Total Obligation Authority. TOAM Tactical Air Operations Module. TOC Tactical Operations Center. ) k5 R7 ?3 Z* V. f; F; }TOE Table of Organization and Equipment. TOF Time of Flight. TOI Track of Interest. TOIA Task Order Impact Analysis. . f0 k# P& N& B5 i# ^9 i0 X, ^! YTolerance The ability of a system to provide continuity of operation under various abnormal + v8 N( O. j& T/ D _" Z! P0 {% nconditions. TOM See Target Object Map.

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Tomahawk US ground launched cruise missile. MDA GLOSSARY, VER. 4.0 T 302 TOMD Task Radar Management Details. TOMP Task Order Management Plan. TOMS Total Ozone Mapping Spectrometer (NASA term). TOO Target of Opportunity. TOOL Target of Opportunity Launch. TOP Task Order Plan. Top-Down Pertaining to an approach that starts with the highest-level component of a ! N) F5 {! c9 B. n# l% C* uhierarchy and proceeds through progressively lower levels; for example, topdown design, top-down programming, top-down testing. Contrast with bottomup. Top-Down Design ; R3 ?$ V1 [+ G6 _% V1 u0 y8 M6 nThe process of designing a system by identifying its major components, 9 C. ]9 U8 s" N: {1 mdecomposing them into their lower level components, and iterating until the 7 s1 Q7 }5 J Gdesired level of detail is achieved. Top-Down 1 [$ ]+ s% a6 {) D5 gTesting The process of checking out hierarchically organized programs, progressively, from top to bottom, using simulation of lower level components. 3 Q0 P% p+ W4 N' m$ nTOPAZ A project to demonstrate the transfer of Russian thermionic space nuclear power technology to U.S. BMD applications. TOR Terms of Reference. * e: _' T5 J kTOS (1) Tactical Operations Shelter (Station). (2) Task Order Status. TOT Time on Target Total Obligation Authority (TOA) A DoD financial term, which expresses the value of the direct program for a given fiscal year. # E6 N; ]3 x/ \$ f* fTotal Quality 1 W. f B3 z7 ?2 cManagement (TQM) A management philosophy committed to a focus on continuous improvement to 8 v9 E0 p2 ]# B1 N7 jproduct and services with the involvement of the entire workforce. + H) [! z9 Q v; }" n- j/ f2 @TOTS Target Oriented Tracking System % J" G4 P& U6 KTOVS TRIOS Operational Vertical Sounder. 3 q4 _; ]" o" b, `8 J5 ^' KToxicity The kind and amount of poison or toxic produced by a microorganism, or 2 B9 N: q6 G+ ]$ Apossessed by a chemical substance not of biological origin. 7 d- t# U5 d, D: ^- _4 QTP (1) Telenet Protocol (Telecomm/Computer term). (2) Test Program. TPALS Theater Protection Against Limited Strikes. * P/ A9 N& `# A, f' O( rTPBM Terminal Phase Battle Manager. ( U# x, J& q) c$ kTPD Mobile Tactical Radar (US). TPDR Total Processing Data Rate (TelComm/Computer term). ) c5 K5 T' T. Y9 M# k+ p; nMDA GLOSSARY, VER. 4.0 T 7 w7 U/ L$ l& e% j2 Y303 TPEC THAAD Performance Evaluation Center. TPEM Technology Program Element Manager (SDIO/MDA term). TPFDD Time-Phased Force Deployment Data. TPFDDL Time-Phased Force Deployment Data List. TPFDL Time-Phased Force Deployment List. 2 T6 s( w7 d+ r) d1 R# w) ITPM Technical Performance Measurement. TPMT Total Preventative Maintenance Time (ILS term). + [/ n1 H2 K* w' P2 _* qTPO (1) Test Planning Organization. (2) THAAD Program Office TPP Test Procedure Plan. 3 v1 z' x# B+ mTPR (1) Terminal Phase Radar. (2) Trained Personnel Requirements. (3) Target Performance Report. ! l0 N% A; n( D9 ~0 E( m- n( GTPS Thermal Protection System. 7 D) y1 N0 a/ }5 O9 _! jTPT Theater Planning Tool. TPWG Test Planning Working Group. (U.S. Air Force) TQM Total Quality Management. Traceability (1) The characteristic of software systems or designs or architectures or k+ L* w+ o4 k8 F2 H! |domain models that identifies and documents the derivation path (upward) and allocation/flowdown path (downward) of requirements and : O* C6 w. k" R* X& A1 Wconstraints. (2) The degree to which a relationship can be established between two or & {+ I; w& G( ?6 ~1 Gmore products having a predecessor-successor or master-subordinate relationship to one another.

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Track (1) A series of related contacts displayed on a plotting board. (2) To display or record the successive positions of a moving object. (3) To lock onto a point of radiation and obtain guidance from. # ^# P/ U9 n; a( F/ D0 H(4) To keep a gun properly aimed, or to point continuously a target locating 3 M& g2 f2 f% j) z$ k' K- L2 Zinstrument at a moving target. . J+ `7 e Z" ?1 a(5) The actual path of an aircraft above, or a ship on, the surface of the earth. Track Assessment ) z! _: @ q! {& l3 s4 P! }The Track Assessment looks for anomalies in an object’s track data. An anomaly in the track may indicate a hit. ( w9 v7 F7 X% ?9 fTrack, Birth to 2 D! s" M7 v7 W* XDeath 0 _4 ~" m: ?* O2 G: kThe 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 2 P& j" m6 L. C H+ g( \* O( }( Fdata. Track 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 2 _- V) `: I6 w& ior place (e.g., reentry). & i% U2 B# q8 i. }9 fMDA GLOSSARY, VER. 4.0 T 304 + K$ l3 \# X: Z3 t7 M6 Z$ OTrack File A target’s stated estimate, confidence, covariance matrix, and associated LOS * x( {" c- h ]$ xmeasurements with irradiances with confidence of association; or some subset of 0 V; v3 Z( r; W8 V2 k z# R, Wthe above. Track File-Track # I" D( l9 n7 r: ^ u1 {History # Q( @* Z* u1 p/ I. d! SA set of individual track reports on a particular object, which taken together produce useful approximation of that object's future position in space. * |6 d& r' Z: ?- G/ vTrack 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 " Q1 b' F' H% Y: j9 Eby filtering. Tracking The act of generating and maintaining a time history of an object's position and & d: o4 O# z/ U# G5 g3 P1 Aany other features of interest. s h5 J: @( ?' H& sTracking and ! c7 M4 K- C; X; |( `/ {Pointing Once a target is detected, it must be followed or “tracked”. When the target is 2 d5 h/ i3 ]( isuccessfully tracked, a weapon is “pointed” at the target. Tracking and pointing are frequently integrated operations. 5 @* m, I; `4 t. O4 z0 V9 l; v8 }Tracking Range 6 s, c) Y9 f/ \(Max) * P# Z5 R2 R. ~8 W% A k) tThe maximum line of sight distance at which a sensor can maintain track of an " j1 M) f5 }) n: A' hobject. 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 Area $ I, [! e+ R! z* f; O& ZAn area in which tracks are produced by one radar station. 3 B1 r) y( ?% K1 I7 xTrack Symbology Symbols used to display tracks on a data console or other display device. : }0 P2 y5 \# V4 bTrack Telling The process of communicating air surveillance and tactical data information between command and control systems or between facilities within the systems. ! V% N* j# z. q: @Telling may be classified into the following types: back tell; cross tell; forward tell; - b( N2 ~$ N) {* I+ W# Flateral tell; overlap tell; and relateral tell. TRADEX Target Resolution and Discrimination Experiment. 9 Y. V: X7 M" I2 d* `- i+ ~TRADOC U.S. Army Training and Doctrine Command, Ft. Monroe, VA. & ^, N* v0 V, f" e6 F6 n4 d; GTraffic Capability Maximum The maximum number of objects per unit time which the sensor system can % h! m7 g" z# Rmaintain track files. , p( g, ~: [1 q" C2 o: Y o: t0 D' {Traffic Decoy Decoy that matches RV characteristics in the exoatmosphere and high endoatmosphere. Train Threat geometry with objects placed in a line (string) along the velocity vector of reentry. / J4 o% P4 g3 p( l/ XTrajectory The curve described by an object moving through space. - y' j/ L* x/ t. A5 @" M# ]& HTrajectory Histories Trajectory information on targets recorded over a period of time. TRAK A data base management system (not an acronym). 4 `1 i) I; ]1 [6 s9 I ^Trans-Attack Period from first tactical indication of attack until termination started, i.e., postattack. MDA GLOSSARY, VER. 4.0 T 1 w0 F3 l" |1 k( e. d8 v' L5 V305 TRANSCOM [U.S.] Transportation Command, Scott AFB, IL. , N- g+ s- {* [ a7 ~. `5 ATRANSEC Transmission Security. Transition The period in which the world strategic balance would shift from offensedominance to defense-dominance. / b6 w' e3 r+ s$ [; oTransition to Production A risk reduction process during which the program shifts (passes) from ' C* u0 r7 |1 B) [! {* h/ h% b: Sdevelopment to production. It is not an exact point, but is described as a # n! r, t" j: i" P; S; ?" [process consisting of disciplined engineering and logistics management to # B5 c" @( `5 i9 c ]% iensure the system is ready for manufacture. (See DoD 4245.7-M.) 6 g6 Z9 q- K$ ]& W7 M1 }7 J9 HTransmission Security 4 Z2 V) }1 j& P; I- V# }" o(TRANSEC) That component of security, which results from all measures, designed to protect communications transmissions from interception and traffic analysis. (See 4 b1 P. v( x% C. A3 z" TCOMSEC.)

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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 ; r7 r; z; F9 y& o- }+ Yencountered when passing from subsonic to supersonic speeds and vice versa. , u) D; n2 _- t: R: k7 Q$ V; J) iTransponder A receiver-transmitter that will generate a reply signal upon proper interrogation. 2 w B. `7 C7 _8 y9 u( ZTRAP Tactical Receiver and Related Applications. Trap Door A hidden software or hardware mechanism that permits system security mechanisms to be circumvented. Traveling Wave Tube (TWT) % \7 K/ d/ _& F0 m. M6 T Z& EAn electronic tube in which a stream of electrons interact continuously or repeatedly with a guided electromagnetic wave moving substantially in ) E/ s; J' K5 u/ Q- Asynchronism 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 8 s& @( Z4 O# }' A; h( Wthe microwave region. ' i, h; I/ \4 V n7 K" U; g1 v- RTraverse (1) To turn a weapon to the right or left on its mount. $ \4 x- [6 G/ C- u8 n! B(2) A method of surveying in which lengths and directions of lines between & v: ~: ]$ P/ A' O3 ?/ }points on the earth are obtained by or from field measurements, and 7 B) I$ P5 o" P4 ~) i0 p0 C/ Uused in determining positions of the points. Traverse Level That vertical displacement above low-level air defense systems, expressed both & k- m8 v; o$ C) l, {! g; bas a height and altitude, at which aircraft can cross the area. % s' f& b) w+ Q- KTRB Tactical Review Board. 1 i! B( |+ {% `% VTRD Technical Requirements Document. ; ^) f& M: h: @TRE Tactical Receive Equipment. 5 p/ n; X6 _/ Z1 a& O& A; F1 QTREA Transmit/Receive Element Array (THAAD). 6 n7 k) O4 ^( }1 O9 `6 U- FTREE Transient Radiation Effects on Electronics. + g7 \, f- U- @TREM Total Radiation Environment Model. TREPS See Thrusted Replicas. TRESIM Tactical Receive Equipment Simulator. " c; |) a" s! AMDA GLOSSARY, VER. 4.0 T 306 TRG Threat Reference Guide. 0 ^1 g+ H% F' s' U {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). , W" k" N9 ? T. ?3 P0 g ^TRIM Toxic Reduction Investment and Management. TRM Technical Reference Model. TRMP Test Resources Management Plan. 2 I- j* a' S2 g& M/ @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 : k% j' A) I1 z e F) S @/ Q) Y: Qauthorizations of the invoking process to the detriment of security or mission 8 i; r c5 y( P) D3 _& z+ pperformance. 9 T( D& I# _0 | N3 g6 hTROPO Tropospheric Scatter. 7 x+ u R' w4 Y% w9 }4 ITropopause 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 3 f5 _) j8 s, n$ ?1 S9 a7 B4 t6 ?tropics. (See Stratosphere, Troposphere.) Troposphere The region of the atmosphere, immediately above the earth's surface and up to - c" V8 V/ O* bthe 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. V& m0 O* {9 z6 i; ]5 o2 eTropospheric ~( g5 M% _. aScatter The propagation of electromagnetic waves by scattering as a result of % g9 H& H- J8 ?' G6 Girregularities in the physical properties of the troposphere. TRP (1) Test Readiness Program. (2) Technology Reinvestment Program. (3) Technology Readiness Program (pre-acquisition program status). (4) Technical Requirements Package. TRPC Technology Readiness Planning Committee. & J! a' p6 v2 `7 S6 O) y8 C7 ?TRR Test Readiness Review. 8 J9 N- r% r6 g' C4 e4 U3 xTrusted Computer 2 ?4 i# @% f6 _2 z6 M: BSystem/Software 0 u! F$ w. A1 V% { n& s- O! ^% yA system or its software that employs sufficient hardware and software integrity - V0 G' t1 e# t0 G% Imeasures to allow its use for processing sensitive or classified information. 1 q3 l* ]2 F: E8 K. \ @9 ATrusted Path A mechanism by which a person at a terminal can communicate directly with the % C0 w6 L) ^: L+ ?3 ~ A5 wTrusted Computing Base. This mechanism can only be activated by the person 0 g* n) H/ s( F8 J0 kof the Trusted Computing Base and cannot be imitated by un-trusted software. TRW TRW, Inc. TS (1) Terminal Service. (2) Top Secret. . j( Q8 r5 n% i, [MDA GLOSSARY, VER. 4.0 T ; m% @% U( J5 J( l7 ?7 `6 P307 & |3 x4 k) H NTSA Technology Security Analysis. : J: J$ F3 J0 LTSD Tactical Surveillance Demonstration. TSCM Tomahawk Strike Coordination Module (USN term). TSD Tactical Surveillance Demonstration. TSDE Tactical Surveillance Demonstration Enhancement. TSEU Technology Seeker Evaluation Unit. ) V. U, i% m& P+ STsIAM Moscow’s Central Institute of Aviation Motors. TSM TRADOC System Manager. TSMA Theater of Strategic Military Action. TSP Target Support Plan. & B! X' M# d% E2 T+ w3 R b! [TSPI Time, Space, Position Information. ' L1 b; \6 F/ y9 z- G& }TSR Target System Requirements.

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TSRD Target System Requirements Document. TSS Terminal Surveillance Sensor. TSSAM Tri-Service Standoff Attack Missile. 8 { B; p) x; m4 e$ |+ oTSWG Target Signature Working Group. TT Total Time. & n" b8 d$ w' ~: e Y% pTT&C Telemetry, Tracking and Command. TT&E Technical Test and Evaluation (Army). TTA Total Time Accounting. TTBM Terminal Tier Battle Manager. 3 Y* S) @$ G( p+ w% C s% F |TTBT Threshold Test Ban Treaty. P& l, [$ q! [- m, j) R) |) {0 |/ ?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). - t5 B. e L$ fTTL Transistor-to-Transistor Logic. ' N% p; f$ W- z; L8 |TTP Tactics, Techniques, and Procedures. ) K2 _) P! L# N2 B2 }) mTTSARB Technology Transfer and Security Assistance Review Board. TTT Test Technology Transfer. + k3 [" B# v( Q2 f8 N/ IMDA GLOSSARY, VER. 4.0 T 4 f" d i) P1 D+ X/ `308 TTV Technology Test Vehicle. TTY Teletype. TUG TRACE User Group. * T! o1 x" i( c( f% ZTV Thrust Vectoring (rocker engineering term). . H& | N2 o) d! zTVC Thrust Vector Control. , r8 I9 k& R& J% ITVE Technology Validation Experiment. TVM Track-via-Missile. TVV Technology Validation Experiment. TW Tactical Warning. 8 L6 o# [/ Y" Y. r; W2 NTW/AA See Tactical Warning/Attack Assessment. TW/SD Tactical Warning and Space Defense. 3 I& f# [% S' Z% n- A, D* ITWG Technical Working Group. TWS TOMAHAWK Weapons System (USN term). : n- f4 V, L2 y& g. sTWT 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 * Y1 T6 u3 R5 |, G9 H, g/ W- ^States all necessary requirements in terms of performance, including test , j& e& W, v" V Kprovisions to assure that all requirements are achieved. Essential physical $ t% L9 a! n: z- a* i- pconstraints are included. Type A specifications state the technical and mission requirements of the system as an entity. . Z# J! I$ s0 `( v. y" P6 kType B - 0 D3 g }6 G5 z/ [Development ; A* [8 s4 j9 D2 k3 zSpecification , w5 k& S- @+ Q& x9 t4 lStates all necessary requirements in terms of performance. Essential physical / G+ t9 t9 y/ @constraints are included. Type B specifications state requirements for the development of items other than systems. They specify all of the required item functional characteristics and the tests required to demonstrate achievement of 3 C4 q a8 I; i) ^2 X3 vthose characteristics. Type 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 ) B! h' C& F( \& X6 C. zprimarily function (performance) requirements or fabrication (detailed design) " Q! H* A5 Q8 d6 i/ ~$ prequirements. Type C specifications intended to be used for the procurement of : P. n q! T. }( G- vitems including computer programs. Typhoon Class of Soviet ballistic missile submarines. + \ t5 X; L8 O: ^8 `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 + @, b5 t* x) F. w0 x) `" Kobjects (i.e., SS-18, SS-24). 9 N1 G. u5 k, \9 `MDA GLOSSARY, VER. 4.0 U 2 u. e; R! V4 t6 S" \$ ]2 U309 1 e) ^: L& n) P# k; WU 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. U.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. " Y6 `3 R- q" \# O% b2 [' ^* dUCAP UAV Combat Air Patrol. UCC Uniform Commercial Code (US legal term). - j5 u& J- b: V% bUCP 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 ( y& O' n- O3 D& Y+ J7 p% Sand coordinating program requirements for testing MRTFB ranges, as well as the capabilities and plans of test ranges to support program requirements. It consists of a series of six planning and execution documents: 10 are the Program Introduction (PI) (also called the Program Introduction Document (PID)), 0 x/ {0 z* ~* K# i$ U2) Statement of Capability (SC), 3) Program Requirements Document (PRD), 4) ; u: c' S6 H- {$ @6 s. ^Operations Requirements (OR), 5) Program Support Plan (PSP), and 6) the - m4 `9 O3 Y! VOperations Directive (OD). The UDS was developed and is regulated by the * X; L" O/ T2 {6 E3 L6 ^' H9 D6 LRange Commanders Council (RCC).

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UE Unit Equipment. 1 M1 ]8 e$ [, P( B& J2 ]3 KUEME Unified Electro-Magnetic Effects. ) y' ]; t0 [; V& O% t4 Z nUEWR Upgrade Early Warning Radar. X( ^$ e& ^1 @% n9 HUF4 Uranium tetra fluoride. 9 M# @& X1 s W9 D4 C; kUF6 Uranium hexafluoride. MDA GLOSSARY, VER. 4.0 U 310 7 Z6 l0 Q9 R9 j sUFG User Focus Group. UFO UHF Follow-On [Satellite Communications System]. 1 J# D) X& ^' u7 o; xUFP Unit Flyaway Price. 0 j# s7 z9 r2 d" p! uUGF Underground Facility. 7 _. n7 c! x$ b. Z. y- ~: G6 mUGS Unattended Ground Sensors. 0 J2 d$ i6 g: ?, \UGT Under Ground Test. UHF Ultra High Frequency. UIC Unit Identification Code. UIN User Interaction Node. UKAS (1) UK Architecture Study (2) UK Associate Studies. 5 g+ s6 c! t/ @! ZUKEADTB UK Extended Air Defense Test Bed. UKTB United Kingdom Test Bed. & U, y$ I' e3 o8 Q4 |, n8 MULCS Unit Level Circuit Switch (SINCGARS term). ULS Unit Level Switch. 0 J" w5 L3 V$ s# `' b: ^: R+ sULSA Ultra Low Sidebobe Antenna. ULTDS Unit Level Tactical Data Switch (SINCGARS term). Ultraviolet (UV) Electromagnetic radiation of wavelength between the shortest visible violet , { R5 J# @$ G, Z(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). UNAAF Unified Action Armed Forces. UNC United Nations Command. Unconventional Warfare ) x% P0 d3 P! DA broad spectrum of military and paramilitary operations conducted in enemyheld, enemy-controlled or politically sensitive territory. Unconventional warfare , u/ Q0 Z% [6 X2 s2 s0 i7 f6 P8 Z( ?+ Z# Mincludes, but is not limited to, the interrelated fields of guerrilla warfare, evasion and escape, subversion, sabotage, and other operations of a low visibility, 2 s( w. O0 G, {( Lcovert, or clandestine nature. Unified Action 4 }! g- g/ Y% J6 QArmed Forces E* H7 c _; H9 IA publication setting forth the principles, doctrines, and functions governing the activities and performance of the Armed Forces of the United States when two or , X* x, k; K/ X; G+ Y `more 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 # a; T0 c2 A: tof Defense with the advice and assistance of the Joint Chiefs of Staff. & `" A/ J, l, |( H6 i7 c: e: A2 wMDA GLOSSARY, VER. 4.0 U * x" M* N+ _, F9 f% J3 C7 S( M311 UNISYS UNISYS Corporation. & y; \! b* f" n/ w% {United States Army Space Command (USARSPACE) s% O4 X* `. }4 L; |1 fThe Army component command of USSPACECOM. Responsible for the Army elements of the SDS system. Located in Colorado Springs, CO. / J' V6 \4 U& W+ X; K4 M, uUnited States Space Command (USSPACECOM) The unified command responsible for planning and conducting ballistic missile 6 I" n& s" \ r# z" Q bdefense. Located in Colorado Springs, CO. $ D) i6 {: C: z x7 i8 QUnited States Strategic 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 3 m- l" m' {" b- ~3 T' PTransportation % x, M* V1 c! F7 Z6 r0 YCommand (USTRANSCOM) The DoD unified command responsible for providing air, land, and sea " _: f8 @' |4 E! N3 H! |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 0 W1 ~- x4 r1 C/ o# y- f% N& \& \on a global basis, as directed by the Secretary of Defense. Located at Scott & L$ t' u9 `0 Q$ f$ HAFB, IL.

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Unk Unknown. Unresolved Objects - g! u5 v1 g, ]& PObjects so closely spaced with respect to the sensor focal plane as to be 5 G6 S% D( |5 l% q( Gindistinguishable from a single object. UNSC United Nations Security Council. UnSecEnergy Under Secretary of Energy. # @ A. `/ r7 s. \' ^1 xUOC Usable on Code (ILS term). 9 E/ Q& p) |( o* A" c t5 u$ {UOES See User Operational Evaluation System. 9 ~( L" I3 {; }% LUPD Unconventional Passive Discrimination. " O% p7 v. `" R6 t# S WUPS Uninterruptible Power Source. ' S; |5 Z5 E$ D; D: x) H* pUQT Unit Qualification Training (ILS term). $ N' a# f( |, M" N4 N D3 LURIP University Research Initiative Support Program. URL Uniform Resource Locator (internet protocol term). + V7 x8 j2 B4 J+ gURT Upgraded RTD. ' G4 Y) j& w; t$ CUS/UK United States/United Kingdom. USA (1) United States Army. (2) Under Secretary of the Army. USAADASCH U.S. Army Air Defense Artillery School. ! \; L, c! V4 c3 j0 r! q T5 N4 t9 {USAAE U.S. Army Acquisition Executive. . V6 v. q F$ W# c0 A9 dMDA GLOSSARY, VER. 4.0 U 312 4 }% w9 K6 \' l; x- z1 v3 H( bUSACE United States Army Corps of Engineers. USACOM United States Atlantic Command, Norfolk, VA. + b& C" G# d% H: ?' dUSAF United States Air Force. 1 R- e: I+ r8 Z, _* ?9 I5 `USAF/AFMC/ESC U.S. Air Force Materiel Command, Electronic Systems Center; ex-ESD. USAF/AFMC/SMC U.S. Air Force Materiel Command, Space and Missile Systems Center; ex-USAF 8 ~3 A; V, f+ k! }. u2 j! OSystems Command /SSD. USAF/OTEC U.S. Air Force Operational Test and Evaluation Center. * z" p4 H; `0 Y+ {1 j0 X: sUSAF/SMC U.S. Air Fore Space and Missile Systems Center, Los Angeles AFB, CA. / g3 E1 V; j! P2 @, t/ l2 mUSAF/SSD U.S. Air Force/Space Systems Division; See USAF/AFMC/SMC. USAFE U.S. Air Forces in Europe. . o# o! ?- V3 q- v: E4 T4 O" s' e0 v- DUSAFLANT U.S. Air Force, U.S. Atlantic Command. USAKA U.S. Army Kwajalein Atoll. USAMICOM 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. USAOTEC U.S. Army Operational Test and Evaluation Command. USARCENT U.S. Army Forces, U.S. Central Command. USAREUR U.S. Army Forces, U.S. European Command. ! [. Q' B! F+ K$ Z4 d5 t( u6 ~6 ZUSARLANT 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). USASSDC 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. + D: J& b% z2 {- \- ~& b4 tUSB Upgraded SBD. USC U.S. Code. ( K: n5 Q- F! r+ w5 s3 NUSCENTAF U.S. Central Command Air Forces. MDA GLOSSARY, VER. 4.0 U 313 4 L3 L" @/ @/ X+ \% v; d0 ^USCENTCOM United States Central Command, MacDill AFB, FL. 8 Q3 n) Z2 O D7 V6 B8 _; mUSCG United States Coast Guard. USCINCCENT 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. 3 `6 t9 P& X6 R- `2 SUSCINCSPACE Commander-in-Chief, U.S. Space Command. " m$ O# I" o' i5 X: v/ uUSCINCTRANS Commander in Chief, U.S. Transportation Command. USCS U.S. Customs Services. USD Under Secretary of Defense. 8 R+ Y0 x* G, s' Q3 nUSD(A&T) Undersecretary of Defense (Acquisition and Technology). ; K8 W- C6 G. GUSD(A) OBSOLETE. Under Secretary of Defense (Acquisition.). ( I0 H- R$ i# ^7 H1 U: I; ?9 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. ' x0 z: u; y- e8 YUSDAO U.S. Defense Attaché Office. USDELMC U.S. Delegation to the NATO Military Committee. USDR&E Under Secretary of Defense for Research and Engineering. User Friendly Primarily a term used in automatic data processing (ADP); it connotes a machine - e, `- `' z! P5 d8 [8 H" D! c0 D) i(hardware) or program (software) that is compatible with a person's ability to $ n4 U Q% Y, y$ a3 i& woperate it successfully and easily. . K! `" z$ g% [User Operational Evaluation System (UOES) Prototypical system developed and tested as part of the early phases of the development process. A UOES has two objectives: (1) testing, evaluation, and training 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. USEUCOM United States European Command, Stuttgart-Vaihingen, Germany. USFJ U.S. Forces Japan. USFK U.S. Forces Korea. USFK/CFC CSFK Combined Forces Command. USG U.S. Government. USIA United States Information Agency.

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MDA GLOSSARY, VER. 4.0 U % T/ n3 ?; x9 b6 G, F$ ~314 USLANTCOM United States Atlantic Command (Now see USACOM). USLANTFLT U.S. Atlantic Fleet. USMAR- % X' M9 c$ p5 k; t5 p: WFORCENT 4 }6 J! ~& O9 m# hU.S. Marine Component, U.S. Central Command. USMAR-FORLANT U.S. Marine Component, U.S. Atlantic Command. USMAR-FORPAC U.S. Marine Component, U.S. Pacific Command. USMC United States Marine Corps. USMCR United States Marine Corps Reserve. 4 Z7 g, O6 F" U: u+ s3 L2 Z( iUSMILREP U.S. Military Representative. USN United States Navy. % Y* R3 h/ K. ?% Y. j- m: f! OUSNAVCENT U.S. Naval Forces, U.S. Central Command. % b8 k% W7 c1 c0 z5 O+ m0 sUSNAVEUR U.S. Naval Forces, U.S. European Command. ) d k( B7 H% {- U3 v$ p! A6 Z7 RUSNIP U.S. Naval Institute Proceedings. USNO U.S. Naval Observatory. # b5 d1 x3 @& aUSNPGS U.S. Naval Post-Graduate School. 7 ^: W. k1 V( X7 {USPACAF U.S. Air Forces, U.S. Pacific Command. USPACFLT US Pacific Fleet. USPACOM United States Pacific Command, Pearl Harbor, HI. USREPMC U.S. Representative to the Military Committee (NATO). + N0 K+ A+ c) z3 c) h2 p# l$ v. NUSSC United States Space Command. / T- Z! J1 A j0 {7 R# v3 x2 CUSSOCOM United States Special Operations Command, Tampa, FL. USSOUTHCOM United States Southern Command, Panama Canal Zone, Panama. USSPACECOM See United States Space Command. ' P7 m" [+ E C- h' \USSS United States Secret Service. USSTRATCOM See United States Strategic Command. USTA United States Telephone Association. USTRANSCOM See United States Transportation Command. UT Universal Time. * B, P5 H3 l$ @; q' R$ l0 yUTC Unit Type Code. / X, u% k, u# q% F9 M+ M/ h; `3 C& I# xMDA GLOSSARY, VER. 4.0 U ! z( b9 z; J% Z. S, T315 UTM Universal Transverse Mercator. UTTMDS Upper Tier Theater Missile Defense System. See THAAD System. - p" a+ K8 s: H* K: i# ZUUT Unit Under Test (ILS term). , `$ x( b% G( g; p+ S6 ~- x2 iUV Ultraviolet. UV Electro- ) {; G8 [ I' Y/ N% s0 uOptics ; D D0 l1 _9 M" |6 dTechnologies/techniques employed by optical sensors in the wavelength 0 H/ N$ z! {4 ~1 x" ]spectrum shorter than visible (e.g., less than 4,000 A). % e0 Y ^1 m$ A. m6 T' H/ R% T ZUVPI Ultraviolet Plume Instrument. UW Unconventional Warfare. MDA GLOSSARY, VER. 4.0 V 316 9 |3 v- l* Q1 V+ `V Volt. V&H Vulnerability and Hardening. V&V Verification and Validation. (See Verification, Validation, and IV&V.) - E" P* K7 l1 C; X% w& `% y% u2 OV/STOL Vertical Short Takeoff and Landing [aircraft]. + q$ Q$ Y6 o% k9 }% b* f" _3 }" ]VAFB Vandenberg Air Force Base, CA. * t) y) C/ s, `! LValidation Confirmation that the processes and outputs from a test resource parallel real world processes and are realistically sensitive to change in the environment, 1 ~, D$ q5 a$ z" @$ s- a" z) ^tactical situation, system design, tactics, and threat. VAMOSC Visibility and Management of O&S Costs. 8 V8 b$ `( N1 S8 b3 y% oVAR Visitor Access Request. : s, x% v6 K: o% A7 xVariability 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 : U3 q; J% {8 f8 ]8 auncertainty of target response to the effects considered. VBO Vertical Burn-Out (velocity). VCC Voice Communications Circuit. VCRM Verification Cross Reference Matrix. VCS Voice Communications System. VDC Volts Direct Current. VDD Version Description Document. VDU Visual Display Unit. VE Value Engineering. 5 N* ~4 L- z/ @6 `: CVECP Value Engineering Change Proposal. 3 `3 O1 H) t9 I' Y6 q" m( YVerification (1) Confirmation that all data inputs, logic, calculations and engineering representations of a T&E resource accurately portray the characteristics, calculations, logic, and interactions of the system under evaluation. & [8 j" u) [4 f' q8 [4 G( R(2) The process of evaluating a system or component during or at the end of the development process to determine whether it satisfies specified $ d2 {! H7 U# h5 U, prequirements. ( \3 s/ T% k$ ^ w: k8 e/ h+ A( zVESA Video Electronics Standards Association. # s, v# l! P# S' Y+ a6 q; y2 w) tVFR Visual Flight Rules. VGA Video Graphics Array (Telecomm/Computer term). * u# `% @1 Q' }! E8 `% n+ ^VHF Very High Frequency. , W7 b7 v; [ z: p( PVHSIC Very High Speed Integrated Circuit. + p4 k3 O: [. D( a; {MDA GLOSSARY, VER. 4.0 V : E0 ~; j* @, d317 & @; w- y1 f0 `' ]7 N2 X$ hVIDS Vehicle Integrated Defense Software (USA term). VIGILANTE Viewing Image/Gimbaled Instrumentation Lab-Analog Neural Three-D Experiment. VIGILANTE involves building a small computer (ANTE) offering 1/12 Operation Per Second (OPS), using a mixture of experimental three-dimensional - x2 ~/ I4 h" w7 X& ~0 S! M6 U$ Ycircuitry and commercial components. Project also demonstrates VIRGIL, a gimbaled airborne sensor with visible, experimental UV and quantum-well IR ; l9 c; L* C. ?* S rcameras capable of tracking targets that can be detected, identified, and 5 _% U* E& Z4 l4 Xprecision-tracked with the ANTE processor. VIM Vibration Isolation Module. 3 e( h/ X) L# j# e4 |VINSON Encrypted Ultra High Frequency Communications System. VIS Visible. VIS/UV Visible/Ultraviolet. Visibility Range (or Visibility) 0 I* H9 _1 [; C# V& RThe horizontal distance (in kilometers or miles) at which a large dark object can * J1 u) ~0 j. Y hjust 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 ) G6 X3 }0 [6 |% d, R6 c/ t- u' Fexceptionally 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). / f; Z* M& Z7 h& IVisible Electro- / L! `' n$ s' z2 r- Z1 n9 R. m4 ZOptics 4 W# ?( F$ C y0 H, L$ ~7 STechnologies/techniques employed by optical sensors in the visible portion of ! `1 L9 G$ n2 y! L3 qthe wavelength spectrum. VLAR Vertical Launch and Recovery (UAV JPO term). $ V, w0 F' ~' x0 {VLF Very Low Frequency. 5 b! m/ B% C+ s3 \: s2 y6 z8 @VLOS Vertical Line of Sight.

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VLS Vertical Launch System. VLSI Very Large Scale Integration. + | L8 H+ z" {VLSIC VLSI Circuits. " N4 q6 g# M6 v5 k1 V# rVLWIR Very Long Wavelength Infrared. VME Versa Modular European [standards]. VMF Variable Message Format (Telecomm term). ( n* q/ M0 [4 O _# _VOX Voice Actuation. VRI Vanguard Research, Inc., Fairfax, VA. , Z: T+ ^3 ?7 G! n: @- i D4 w+ X1 ~VTC Video Teleconference. . s P. ?( X8 Q, k O1 }& _VTOL Vertical Takeoff and Landing [aircraft]. & B6 N* U8 y( w8 @VTOL-UAV Vertical Takeoff and Landing Unmanned Aerial Vehicle. 3 t0 q. f' {. I$ r9 ?VUE Visible Light/Ultraviolet Experiment. MDA GLOSSARY, VER. 4.0 V 318 h& U- q% m) v7 gVulcan UK bomber. VV&A Verification, Validation, and Accreditation. % \# H- r, @* }VVER Pressurized water type nuclear power reactor. VVIRF Verification and Validation Information Request Form. ! X7 f4 \0 @) v% W* ^) {( R; @MDA GLOSSARY, VER. 4.0 W 319 6 y" T! Z* d. c' L9 j1 _W/ With. * \1 s* u% E/ n, L1 b- ?5 i0 \/ lw/o Without. W/TD Warning/Threat Detection. 8 C+ d5 m+ `% ]( A" ZWAA Wide Aperture Array. ( u+ j8 l" p* M- ]WALEX Warfare Analysis Laboratory Exercise. 7 W& q! X' g6 ~WAM (1) Worldwide Military Command and Control System (WWMCCS). (2) Wide Area ; {- o( W0 h4 N/ r, Y$ ^7 \Munition. (3) Wide Area Mine. (4) Wide Area Missile. WAN Wide Area Network (Telecomm/Computer term). $ U- n4 N: `3 Q7 J5 `; w4 V9 WWAP Wide Azimuth Probe. . c2 i) R0 c# M5 i6 OWar 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 4 r9 Y5 a" v8 O- |/ Cor assumed real life situation. Wargame 2000 Title of MDA program for development of a state-of-the-art simulation tool at the $ A5 \6 v5 V9 p- BJNTF for use in CONOPS validation, missile defense program design verification, validation and accreditation, and support CinC/Allied wargames and " P4 \0 J ^8 Y1 k4 vassessments. Warhead A weapon, usually thermonuclear, contained as the payload of a missile. / [, `% \$ F7 p1 |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 M! |, M# U' |components. ( {6 ]0 N: y0 B# dWARM Wartime Reserve Modes. Warning of Attack A warning to national policymakers that an adversary is not only preparing its armed forces for war, but intends to launch an attack in the near future. : u( d4 j, A) S3 _& Y! x) XWarning Order A preliminary notice of an order or action that is to follow. , ~3 H" ]% P @3 |- O! WWARSIM Warfighter Simulation (US Army term). * E4 I# l: h: y! oWARSIM 2000 Warfighter Simulation 2000 (US Army term). * q4 u6 }: G3 L' |5 @- f. yWartime Reserve 6 b" @7 Y* s+ D5 b {& H! zModes (WARM) " x0 x7 e4 T/ @% k4 wCharacteristics and operating procedures of sensor, communications, navigation 4 R/ T! _0 m+ P; }1 Y R2 ~aids, threat recognition, weapons, and countermeasures systems that (1) will contribute to military effectiveness if unknown to or misunderstood by opposing commanders before they are used, but (2) could be exploited or neutralized if 7 ~1 {3 S) |6 U2 o; u" G- O( b4 {known in advance. Wartime reserve modes are deliberately held in reserve for : f% N' J. w: M4 m* Dwartime or emergency use and seldom, if ever, applied or intercepted prior to such use. ' L2 O0 ?7 b# t' e( p9 XWAS Wide Area Sensor. WASP Wide-body Airborne Surveillance Platform. A modified DC-10. MDA GLOSSARY, VER. 4.0 W $ ?$ I2 p# \, g" W4 Y320 WASHDC Washington, District of Columbia. Wastage (Max) The maximum number of defense weapons which, when used, will be ineffective in contributing to the defeat of the offense. Watch Condition (WATCHCON) : T, `/ ]& h- \/ E6 e j. WSeries of readiness conditions used by the intelligence community to alert staffs to watchfulness without raising DEFCON. - K' [# B' s8 e1 f4 k% xWATS Wide Area Telephone System. ; c8 K- @0 S/ hWAVE Wideband Angular Vibration Experiment. 8 h- V* f; q( v0 `2 q `& S( `Wavelength The distance between two points having the same phase in two consecutive 6 g" G! N5 v2 J" p0 F- w6 ecycles of a periodic wave, along a line in the direction of propagation. WB Wideband. 7 ]! G( k, P& \$ m& mWBM 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). WCP (1) Weapon Control Processor. (2) Weapon Control Platform. 3 E4 f0 Q$ h. x K7 k, l* O/ ~WCS Weapons Control System. 0 d% o, W- ]- ]1 b5 BWDM Wavelength Division Multiplexon. Weapon Enabling The set of control functions without which defense weapons cannot be m8 n+ w9 ~/ i/ u* U2 J, H* `% olaunched.