航空缩略语词典

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MDA GLOSSARY, VER. 4.0 T 298 Theater Missile 2 s l) t- B/ _/ zDefense Council (TMDC) ' Q. L9 j' e8 Z2 D' yA consultative body for considering TMD family of systems planning and programming issues; chaired by an Assistant to the MDA Deputy for 1 m9 ]+ I& l( R9 V9 c- NAcquisition/TMD, membership includes MDA TMD Directors, representatives of ' t- c0 h% E @5 veach applicable Service Program Executive Officer, and TMD Executive Agents m7 O. a/ ^7 D$ W1 {and Program Managers. # J/ i& Z5 A) F; Q, b: H% u5 }Theater High Altitude Area 1 F; X" e1 k) GDefense System 2 V- ?3 t( k/ S(THAAD) ! R: t1 o6 |8 r& F1 xA ground-based, air transportable interceptor system that will provide wide area , J( l8 { a7 hdefense capability by intercepting longer-range missiles at higher altitudes and at 6 c0 j9 E6 l/ T# q3 C7 y w5 g3 ^greater distances. Will provide an overlay or upper tier to point defenses such as ! @& ?; K+ T4 D- d1 _4 pPATRIOT. Theater Missile ! r7 O6 y: {. @& Q# G(TM) A 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) - `2 J) v. P7 o" i6 r+ F% \OBSOLETE. The strategies and tactics employed to defend a geographical area _' |$ |# o V# S/ h. Soutside the continental United States against attack from short-range, 0 } a8 @4 }+ I/ D& T5 sintermediate-range, or medium-range ballistic missiles. 3 Y$ _! w' G* G0 Y* @& ^! z& `Theater Missile 2 r# n/ f7 J1 {Defense Ground- & p9 ~. \& i9 E% S' p* cBased Radar (TMD-GBR) % p1 a- r- z7 L2 f ^A ground-based, air transportable sensor that provides search, tracking and ; d4 P; ]0 {5 G" @& fdiscrimination capabilities for the THAAD interceptor system. Also referred to as * s: ~9 [$ \4 M% @( Y" YTHAAD Radar. Theater Missile N2 ~2 }% G* E' L& U7 FDefense Initiative (TMDI) An initiative under which all DoD theater and tactical missile defense activities are |8 G8 e# W. q. |( I! Ycarried out. Section 231 of the National Defense Act for Fiscal Year 1993 (Public Law 102–484) directed establishment of a TMDI office within the DoD. 1 F/ I, ]/ s( M: VTHEL Tactical High Energy Laser. ! S' V( j2 V2 }: v( K: eThermal Energy Electromagnetic energy emitted as thermal radiation. The total amount of ! y }/ R* N W% u4 ^7 Tthermal energy received per unit area at a specified distance is generally 6 U4 Q$ s4 Q0 n& z9 W/ H; g xexpressed in terms of calories per square centimeter. Thermal Imagery Imagery produced by sensing and recording the thermal energy emitted or reflected from the objects, which are imaged. A6 B2 c* ]- l. k$ xThermal Kill The destruction of a target by heating it, using directed energy, to the degree 8 b& ^8 z$ q a- w/ C7 x( ithat structural components fail. Thermal Management Technologies/techniques associated with the control and management of thermal energy, its generation, dissipation, and recovery. Thermal Radiation 7 ^5 |7 A Z% ~( b0 T& ~Electromagnetic radiation emitted (in two pulses from a nuclear air burst) from the fireball as a consequence of its very high temperature; it consists essentially of ; \ v8 c7 P) e2 B! x' i. y' P" bultraviolet, visible, and infrared radiations. # e; q9 s8 R+ B5 Z# c- P& fThermal X-Rays The electromagnetic radiation, mainly in the soft (low energy) x-ray region, ( g n! H% B. o5 Bemitted by the nuclear weapon residue by virtue of its extremely high ' A- ^& B( n) n- \: Vtemperature; it also is referred to as the primary thermal radiation. It is the , \- R3 M9 D2 Q Q4 C- @* ?2 Dabsorption of this radiation by the ambient medium, accompanied by an increase in temperature, which results in the formation of the fireball (or other heated region) which then emits thermal radiation. (See X-Rays.) MDA GLOSSARY, VER. 4.0 T 2 A5 Z s5 w x! r) G299 # S6 a) h( N# H. @" R* i! W+ |Thermosphere 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 . K+ }1 _3 t" ]9 Tat 40 to 50 miles (70 to 80 kilometers); the thermosphere includes, therefore, the 5 a' W7 M7 C# F1 M. B3 f! Lexosphere and most or all of the ionosphere. / q" a l( X% X5 O6 i2 j1 FThreat . B$ p* s; Y. {$ ]Characterization An assessment of the nature, magnitude and intent of an attack in progress. 9 X+ p, q2 d4 X! zThreat Corridor (Threat Tube) / g6 k. \% {& e% |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 computation. : {# x) I: X1 J# sThreat Scenario A hypothetical example of the employment of threat systems against ballistic 0 N" I1 {. D+ H/ i7 kmissile defenses for the purpose of analysis and evaluation of those defensive systems and architectures. Threshold Performance capability or characteristic level in terms of a minimum acceptable value (threshold) required to satisfy the mission need and a performance objective. 1 {9 `. n0 G' MThreshold $ z' O2 A- `# W; U* r3 ZDefense , v. L( r$ A; K, AA defense strategy that concedes that the target can be destroyed at a price 9 }3 ]' F; k, E7 ^' A& Gthat is not prohibitive, but the presence of the defense is thought to require the 8 C& _6 h$ q1 N! ]offense to mount a relatively large and complex attack. Throw Weight All weight in an interceptor, above the sustainer, which serves as the kill vehicle. Thrusted Replicas (TREPS) : R: j1 p. y5 O9 k# p$ HConical decoys equipped with a miniature rocket device. Generally used to - a8 `3 [ F5 g. ^2 R8 A( k* P" Lchange the decoy’s optical signature to resemble that of an RV in the reentry ' ~* i0 Z$ F/ @4 p% P; X. w3 Xphase. * C/ t! h- z& s! aTI (1) Technical Instruction. (2) Technology Insertion. TIARA Tactical Intelligence and Related Activities. 6 U4 a( h6 e0 {6 }; c3 L6 ?TIBS (1) Theater Information Broadcast Service. (2) Tactical Information Broadcast System. + {. E1 U8 |4 @6 n7 P( K% @3 h, C(3) Theater Intelligence Broadcast System. % `. o$ w/ B8 ?9 E! s; \TIC (1) Thermionic Integrated Circuit. (2) Technical Information Center. TIDP Technical Interface Design Plan. % H4 J( L3 g% W9 nTIE (1) Technology Integration Experiments. (2) Technical Independent Evaluation. 0 @* u% @' L7 F' Y; {Tier An integrated set of SDS elements that address a particular phase of the threat (e.g., boost phase). ; Z, S" F( M+ @ b$ T4 P5 eTiered Defenses The use of defensive systems at different phases of the missile trajectory. TIES Technology Integration Equipment System. 6 _# c0 r" u' ~1 \8 s, Q' H' ]TIIAP Telecommunications and Information Infrastructure Assistance Program. 5 z3 b4 d) B/ q) d; R" cTIL Technical Insertion Laboratory. TIM Technical Interchange Meeting. MDA GLOSSARY, VER. 4.0 T 300 3 ^! U% D6 l" L. `& gTime-Phased Force and Deployment List Appendix 1 to Annex A of the operation plan. It identifies types and/or actual ! b9 G o5 u' I( S2 @units required to support the operation plan and indicates origin and ports of debarkation or ocean area. ! x. A: C5 N/ c4 M) QTime of Flight 1 B9 v4 y. p4 `* {(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. & I0 ~8 b1 ^) q# F4 s; tTime Sensitive Targets Those target requiring immediate response because they pose (or will soon pose) a clear and present danger to friendly forces or are highly lucrative, ' K) T$ N6 J. n3 t8 Bfleeting targets of opportunity.

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Time to Station The time required to move a sensor to its operating position. 5 y! N$ n! D* Q, {8 ~TIMS Training Integration Management System (USAF term). ' i6 C: W O2 z9 U' s& zTIN Theater Intelligence Networks. TIP TOPAZ International Program. TIR OBSOLETE. Terminal Imaging Radar. (Predecessor to Ground-Based Radar Terminal (GBRT).) $ D, K7 ^0 y, E$ l8 L3 u% ZTIRS Telemetry, Instrumentation and Range Safety TIS (1) Trusted Information Systems, Inc. (2) Technical Information System. . x9 s+ ]' c/ g6 gTitan USICBM. TIU TIBS/Tactical Interface Unit. & k8 ~/ J* k8 v& i0 O7 i3 KTIWG Test Integration Working Group. (U.S. Army) 2 h1 f- H$ C9 d# A0 ZTL Team Leader. TLA Time Line Analysis. % M3 Q1 A& |( S4 E kTLAM Theater land Attack Missile. TLAM/D TLAN [with submunition] Dispenser (Navy term). TLDD Top Level Design Document. % a" g5 ]5 p9 E y, VTLV Target Launch Vehicle. TLX Teletype. 0 x% j$ F4 }0 B G+ C6 XTM (1) See Theater Missile. (2) Technical Manual. (3) Tactical Missile (US Army 5 h2 Z% a* T( r6 r8 Yterm). 9 d9 u' ^. Q) H' w( L5 t8 o- s( T8 gTMCC Test Monitor and Control Center. ; c2 A0 U. l# \* ]7 |TMD See Theater Missile Defense. TMD C2 Theater Missile Defense Command and Control. * r2 F9 E( \* g; `5 ]3 }. zMDA GLOSSARY, VER. 4.0 T # e q) p4 H+ U0 w$ H301 TMD C 3 I Those assets that provide connectivity between and among Theater Ballistic Missile Defense forces. TMD ESM Theater Missile Defense Existing System(s) Modification (MDA term). % B% V' Q$ B6 t0 z5 NTMD GBR See Theater Missile Defense Ground Based Radar (THAAD Radar). ( y. ` V5 @- A: ^( oTMD IA Theater Missile Interoperability Architecture. TMD ITP TMD Integrated Test Plan. TMDAS Theater Missile Defense Architecture Study. ' H* F* T6 N$ Y7 \4 l# O( a3 L* `TMDC Theater Missile Defense Council. $ u, x) [, r9 C% {4 l; _TMDE Test Measurement and Diagnostic Equipment (ILS term). ! r" ^' x/ O: Z, q4 bTMDI See Theater Missile Defense Initiative. TMDSE Theater Missile Defense System Exerciser. 3 D; M, |8 n& c* STMMM TOMAHAWK Multi-Mission Missile. TMP Technical Manual Plan (ILS term). % H1 d7 n1 r* }. }; }; V; D" rTMPCU Tomahawk Theater Mission Planning Center Upgrade. TN (1) Terrestrial Network (C2E term). (2) Thermonuclear. ) Q9 R, Y! z" E7 F' \+ i8 k+ t! bTNF Theater Nuclear Forces [Treaty term]. TNT Trinitrotoluene. TNW Theater Nuclear Weapon. TO (1) Task Order. (2) Technical Order. TOA Total Obligation Authority. 7 J( G4 Q7 b9 h8 d7 HTOAM Tactical Air Operations Module. TOC Tactical Operations Center. TOE Table of Organization and Equipment. TOF Time of Flight. 4 R1 }; @1 H$ Z0 lTOI Track of Interest. TOIA Task Order Impact Analysis. ; M6 ]9 G& O0 ?$ ^3 ~Tolerance The ability of a system to provide continuity of operation under various abnormal , k6 @/ H6 a, |conditions. ) K o0 S# Q7 S8 C7 i ~6 ^TOM See Target Object Map.

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Tomahawk US ground launched cruise missile. MDA GLOSSARY, VER. 4.0 T & G; S5 ^, g4 x& [7 A- _# V302 / c) N R1 d$ P: ~, s) r5 OTOMD Task Radar Management Details. TOMP Task Order Management Plan. 6 V; l. {+ P# d3 M! J$ kTOMS Total Ozone Mapping Spectrometer (NASA term). TOO Target of Opportunity. TOOL Target of Opportunity Launch. , u$ d6 _, r! UTOP Task Order Plan. Top-Down Pertaining to an approach that starts with the highest-level component of a hierarchy and proceeds through progressively lower levels; for example, topdown design, top-down programming, top-down testing. Contrast with bottomup. Top-Down ' R# U9 J8 o' dDesign The process of designing a system by identifying its major components, decomposing them into their lower level components, and iterating until the desired level of detail is achieved. Top-Down Testing ; k. q, Y1 q* m- M4 C3 KThe process of checking out hierarchically organized programs, progressively, from top to bottom, using simulation of lower level components. TOPAZ A project to demonstrate the transfer of Russian thermionic space nuclear power technology to U.S. BMD applications. 7 e% }3 j" t& B% d: LTOR Terms of Reference. TOS (1) Tactical Operations Shelter (Station). (2) Task Order Status. TOT Time on Target ) ~. f+ t. e& A& g5 jTotal Obligation Authority (TOA) % A" {3 h$ j, C4 |3 }0 aA DoD financial term, which expresses the value of the direct program for a given 2 h% h3 `0 j6 ?5 A4 e+ X. ~0 |fiscal year. 5 u& z9 T' t0 ~/ B2 q# \Total Quality , b# u$ B! K9 c3 fManagement 6 C7 z1 B' b' U& O d$ a) {(TQM) % l' i1 @* V/ N B' H5 mA management philosophy committed to a focus on continuous improvement to ' o. o p' u5 i+ h/ a8 gproduct and services with the involvement of the entire workforce. # |$ D/ E) E& M. ^TOTS Target Oriented Tracking System 6 M( g; Q6 S# QTOVS TRIOS Operational Vertical Sounder. Toxicity The kind and amount of poison or toxic produced by a microorganism, or possessed by a chemical substance not of biological origin. $ A1 r# w0 G$ P% XTP (1) Telenet Protocol (Telecomm/Computer term). (2) Test Program. , I" V2 s' F, oTPALS Theater Protection Against Limited Strikes. TPBM Terminal Phase Battle Manager. - V7 T' i/ ~" B) e% p: Q, [TPD Mobile Tactical Radar (US). ( U2 b5 S8 S& y. j" i& V% QTPDR Total Processing Data Rate (TelComm/Computer term). MDA GLOSSARY, VER. 4.0 T 303 ; p& n/ _& f# m% eTPEC THAAD Performance Evaluation Center. # y3 M1 z# N k% FTPEM Technology Program Element Manager (SDIO/MDA term). TPFDD Time-Phased Force Deployment Data. TPFDDL Time-Phased Force Deployment Data List. + D$ O5 D/ I. n" |: ^ H4 v' b3 KTPFDL Time-Phased Force Deployment List. # A& [. \- } B" ~TPM Technical Performance Measurement. 3 y' J6 ?' r. N0 s5 F+ |TPMT Total Preventative Maintenance Time (ILS term). * Z5 N% A# C0 i KTPO (1) Test Planning Organization. (2) THAAD Program Office TPP Test Procedure Plan. TPR (1) Terminal Phase Radar. (2) Trained Personnel Requirements. (3) Target 1 w" e% u% Q. g4 O) f J7 pPerformance Report. TPS Thermal Protection System. 4 k5 u* ?/ O+ s' V( STPT Theater Planning Tool. 7 ]( [ J, A7 s% j5 k5 eTPWG Test Planning Working Group. (U.S. Air Force) TQM Total Quality Management. ) \8 B- m3 R1 u, |Traceability (1) The characteristic of software systems or designs or architectures or domain models that identifies and documents the derivation path (upward) and allocation/flowdown path (downward) of requirements and constraints. (2) The degree to which a relationship can be established between two or " t; Q& W" a: t, Vmore 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. 1 {- u7 C/ y9 O5 }(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. 8 k, P8 v4 y; w; u+ x: x' r(5) The actual path of an aircraft above, or a ship on, the surface of the 0 ^7 w6 w T8 u7 o. nearth. & y- X# g# ]( G$ i1 vTrack + p& Z/ d9 R* E# \8 d. hAssessment $ l$ E2 [$ n& {7 t. ~+ \* l" WThe Track Assessment looks for anomalies in an object’s track data. An anomaly in the track may indicate a hit. Track, Birth to Death 3 K" Y1 Z) m- w7 ?/ H7 PThe 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 4 x) Y( H: n- C- fdata. Track Extension This term usually applies to improvements in track estimates by use of new data. $ O/ J! p, X: A$ Q* f8 U2 U- bIt is sometimes used to describe a process of target extrapolation to a future time % Y) z; A, U4 a& {" h9 Dor place (e.g., reentry). MDA GLOSSARY, VER. 4.0 T 304 ' O, J) o3 j L' l7 I0 M: t; t3 qTrack File A target’s stated estimate, confidence, covariance matrix, and associated LOS / N" w' C' N1 p3 umeasurements with irradiances with confidence of association; or some subset of % `4 K# b' m8 B: z4 Jthe above. Track File-Track & j$ x+ }0 m) e* M8 }. FHistory / j. k! i+ }6 p& [: aA set of individual track reports on a particular object, which taken together ( W/ c: Q4 d/ ?5 l# Nproduce 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 $ C! i) A/ z3 bby filtering. 3 ~0 a6 Z, u2 m. KTracking The act of generating and maintaining a time history of an object's position and % f9 X, B T6 @. }7 {& sany other features of interest. / D* Y7 c1 K! t! W4 u. ITracking and " }( s0 Y/ J! ^' O* H9 ]1 x( j7 yPointing Once a target is detected, it must be followed or “tracked”. When the target is successfully tracked, a weapon is “pointed” at the target. Tracking and pointing * y( U, K- e C1 ^are frequently integrated operations. Tracking Range (Max) 6 H6 k8 k7 U% Q4 O8 RThe maximum line of sight distance at which a sensor can maintain track of an " u2 j Q. R$ Y [: qobject. : w# F$ n9 H6 T3 y8 NTrack 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 1 O5 B7 E3 w. x! HArea 8 l C/ w3 V. Q; ~4 b, AAn area in which tracks are produced by one radar station. Track Symbology Symbols used to display tracks on a data console or other display device. , g- K8 I. E2 cTrack Telling The process of communicating air surveillance and tactical data information between command and control systems or between facilities within the systems. . Z1 K, Q+ Y) }" r0 oTelling may be classified into the following types: back tell; cross tell; forward tell; / y* o, O V- f$ w2 V, Olateral tell; overlap tell; and relateral tell. ! Y! B1 }7 D; l: p* _' d+ nTRADEX Target Resolution and Discrimination Experiment. ; \4 i1 K- p; J" l$ ]TRADOC U.S. Army Training and Doctrine Command, Ft. Monroe, VA. , }9 X. m/ |' T* zTraffic Capability 5 g# H5 q+ y( zMaximum * `$ J* A$ v! [* |$ A" UThe maximum number of objects per unit time which the sensor system can maintain track files. Traffic Decoy Decoy that matches RV characteristics in the exoatmosphere and high endoatmosphere. Train Threat geometry with objects placed in a line (string) along the velocity vector of reentry. 9 n* P4 [+ p% j4 \0 i7 JTrajectory The curve described by an object moving through space. Trajectory % P' d2 g* V4 C, T. M4 v( i0 \Histories Trajectory information on targets recorded over a period of time. 0 I: @6 N0 d+ r2 Z8 n5 c4 ^6 V( pTRAK A data base management system (not an acronym). 1 Y/ R5 `& Z1 [7 W5 oTrans-Attack Period from first tactical indication of attack until termination started, i.e., postattack. * K. q& O# A% G* {* p* wMDA GLOSSARY, VER. 4.0 T 7 y" R8 @/ z9 d O. N" P305 , I. i0 s) \: |) ?- S) ITRANSCOM [U.S.] Transportation Command, Scott AFB, IL. TRANSEC Transmission Security. ! M( h& B0 E& Z4 `3 _Transition The period in which the world strategic balance would shift from offensedominance to defense-dominance. / e' f9 v& Z" z) Y! s2 BTransition to Production 2 P% x/ ^$ }0 TA risk reduction process during which the program shifts (passes) from development to production. It is not an exact point, but is described as a 6 d6 h8 V7 H8 k9 E- Z4 Lprocess consisting of disciplined engineering and logistics management to ensure the system is ready for manufacture. (See DoD 4245.7-M.) . O2 t% D2 [7 ATransmission Security ) p0 t S) @, K2 H! l& e6 Q: {" r(TRANSEC) o8 o$ c1 j# WThat component of security, which results from all measures, designed to protect communications transmissions from interception and traffic analysis. (See # |2 A& G; i6 y7 \: Q+ D0 m9 CCOMSEC.)

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Transonic Of or pertaining to the speed of a body in a surrounding fluid when the relative ) t, P1 R2 B8 w8 tspeed 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. Transponder A receiver-transmitter that will generate a reply signal upon proper interrogation. TRAP Tactical Receiver and Related Applications. " P- _( c4 u* KTrap Door A hidden software or hardware mechanism that permits system security 1 m& ]% {1 I# a% h* u: h Vmechanisms to be circumvented. Traveling Wave Tube (TWT) An electronic tube in which a stream of electrons interact continuously or repeatedly with a guided electromagnetic wave moving substantially in synchronism with it, in such a way that there is a net transfer of energy from the - K6 B; w1 F& j) w2 Nstream to the wave; the tube is used as an amplifier or oscillator at frequencies in 8 ]( l" L) O2 w9 qthe microwave region. Traverse (1) To turn a weapon to the right or left on its mount. : {; @9 }0 J" I(2) A method of surveying in which lengths and directions of lines between 1 |# `3 k" x" u. Vpoints on the earth are obtained by or from field measurements, and used in determining positions of the points. Traverse Level That vertical displacement above low-level air defense systems, expressed both as a height and altitude, at which aircraft can cross the area. TRB Tactical Review Board. TRD Technical Requirements Document. TRE Tactical Receive Equipment. TREA Transmit/Receive Element Array (THAAD). ) P: p, N1 l4 L' U' [9 gTREE Transient Radiation Effects on Electronics. # \( G$ N) i! C# [TREM Total Radiation Environment Model. TREPS See Thrusted Replicas. TRESIM Tactical Receive Equipment Simulator. $ ]/ p5 j: X) R3 pMDA GLOSSARY, VER. 4.0 T % V( K! ~" r( k# U8 d1 }5 N306 : ~# J( Z" [; x, C5 s& l! ]TRG Threat Reference Guide. * [* x: \' `* z' N- HTRI-TAC Tri-Service Tactical Digital Communications System. TRIDENT Class of US ballistic missile submarines (USN term). 4 Y. Q% c4 _. a- C s6 \TRIDENT I (C-4) US SLBM (USN term). 7 a) h5 V+ u9 DTRIDENT II (D-5) US SLBM (USN term). TRIM Toxic Reduction Investment and Management. 5 L2 z4 {+ i: U& X$ ~$ i: KTRM Technical Reference Model. TRMP Test Resources Management Plan. U% |; ]7 \6 C ?7 qTRN (1) Task Requirements Notice. (2) Test Requirements Notification. & c4 p* u } R9 q5 @2 r: A6 ?+ ITrojan Horse A computer program with an apparently or actually useful function that contains 9 h) j; R6 b ^- @' D9 Eadditional (hidden) functions that surreptitiously exploit the legitimate authorizations of the invoking process to the detriment of security or mission performance. + H; e9 z6 @, T, i; ]2 X1 f0 L9 O4 \TROPO Tropospheric Scatter. Tropopause The imaginary boundary layer dividing the stratosphere from the lower part of the ]" J2 A y0 b. V/ X' ]' k, Oatmosphere, 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 ( ]$ z& y8 i+ k" x( Cthe tropopause, in which the temperature falls fairly regularly with increasing altitude, clouds form, convection is active, and mixing is continuous and more or 2 x/ R- `* [, \2 J; pless complete. Tropospheric Scatter The propagation of electromagnetic waves by scattering as a result of irregularities in the physical properties of the troposphere. ) t/ W, h9 t; _# m p5 A# STRP (1) Test Readiness Program. (2) Technology Reinvestment Program. ' Q, \4 V' c( V& T5 s! {2 U' l(3) Technology Readiness Program (pre-acquisition program status). (4) Technical Requirements Package. 9 X2 t M8 B2 y7 H jTRPC Technology Readiness Planning Committee. ! n+ z# q- L) p! A4 ^. [. STRR Test Readiness Review. . o% u6 S/ Y: i. h0 P& MTrusted Computer System/Software 4 U3 }6 T4 P# ~" H! A- sA system or its software that employs sufficient hardware and software integrity measures to allow its use for processing sensitive or classified information. ! D/ \; s0 Q) q0 GTrusted Path A mechanism by which a person at a terminal can communicate directly with the Trusted Computing Base. This mechanism can only be activated by the person of the Trusted Computing Base and cannot be imitated by un-trusted software. TRW TRW, Inc. TS (1) Terminal Service. (2) Top Secret. MDA GLOSSARY, VER. 4.0 T ) h5 M; X! ?2 }4 Q1 v, i& |9 | h1 ~7 q307 TSA Technology Security Analysis. TSD Tactical Surveillance Demonstration. 3 a, x: N; g& ~8 f) sTSCM Tomahawk Strike Coordination Module (USN term). TSD Tactical Surveillance Demonstration. TSDE Tactical Surveillance Demonstration Enhancement. t- s) {4 z8 _& k) }% ?9 {' j$ O; ^" [TSEU Technology Seeker Evaluation Unit. TsIAM Moscow’s Central Institute of Aviation Motors. TSM TRADOC System Manager. TSMA Theater of Strategic Military Action. TSP Target Support Plan. TSPI Time, Space, Position Information. TSR Target System Requirements.

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TSRD Target System Requirements Document. TSS Terminal Surveillance Sensor. $ z5 }, }, D0 w7 rTSSAM Tri-Service Standoff Attack Missile. TSWG Target Signature Working Group. 0 L: h; ]( _4 K* `TT Total Time. TT&C Telemetry, Tracking and Command. & U& w( q/ j% x, a; }TT&E Technical Test and Evaluation (Army). TTA Total Time Accounting. % [) w: l2 r' H5 B# E) rTTBM Terminal Tier Battle Manager. 9 Y$ f+ X+ k. ^7 RTTBT 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, + L8 t' B; W) d& ?5 @! e( w, uwhich have significant potential for improving testing. TTEL Tools and Test Equipment List (ILS term). 8 d% \- A% p: FTTL Transistor-to-Transistor Logic. 1 p: J1 o0 A- wTTP Tactics, Techniques, and Procedures. ( J4 c I$ q. H' ]TTSARB Technology Transfer and Security Assistance Review Board. TTT Test Technology Transfer. % n: k8 e7 z- i0 HMDA GLOSSARY, VER. 4.0 T 308 TTV Technology Test Vehicle. TTY Teletype. 1 w/ l' {. T, Y. z7 d, pTUG TRACE User Group. TV Thrust Vectoring (rocker engineering term). % U" t- o9 c+ j" F# [: A6 ^TVC Thrust Vector Control. - B; ] S; n- Q& s9 B) m( V5 w; J$ NTVE Technology Validation Experiment. 8 v( S4 I" W1 Z! t4 u( T' I# J$ bTVM Track-via-Missile. TVV Technology Validation Experiment. 2 z: r+ W+ T+ D! F2 @TW Tactical Warning. - u' Y5 B2 Y! X. l8 a: ~# G9 hTW/AA See Tactical Warning/Attack Assessment. TW/SD Tactical Warning and Space Defense. TWG Technical Working Group. % k. B! B, ^5 }+ h! K& @TWS TOMAHAWK Weapons System (USN term). 4 z W" B& d* h/ ?! | xTWT Traveling Wave Tube. TWTA Traveling Wave Tube Amplifier. (Electronic Engineering term). * [/ n& ~& R4 j' H+ N$ o/ ~# kTY Then Year (PPBS term). TY$M Then Year Dollars Millions. Type A - System 7 |" \5 J$ n" D+ gSpecification States all necessary requirements in terms of performance, including test provisions to assure that all requirements are achieved. Essential physical + \8 G" {: Q: Q! {8 ~/ C' Bconstraints are included. Type A specifications state the technical and mission ; e, Z) K& p; V+ Nrequirements of the system as an entity. Type B - Development Specification States all necessary requirements in terms of performance. Essential physical constraints are included. Type B specifications state requirements for the 3 K% w. D- J: ?5 c2 odevelopment of items other than systems. They specify all of the required item 1 c/ f! g8 w5 S: M) Ofunctional characteristics and the tests required to demonstrate achievement of those characteristics. Type C - Product {' l, R' u$ HSpecification Product specifications are applicable to any item below the system level, and may be oriented toward procurement of a product through specification of 1 \2 \) c. ?1 yprimarily function (performance) requirements or fabrication (detailed design) requirements. Type C specifications intended to be used for the procurement of items including computer programs. 4 C* S8 u- v4 K2 vTyphoon Class of Soviet ballistic missile submarines. ! e) ^4 g+ f6 M# o7 R0 t3 OTyping 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 " ^: y+ N h6 Bobjects (i.e., SS-18, SS-24). MDA GLOSSARY, VER. 4.0 U 2 R2 N( a" T" s309 . g2 ^8 v( ~( pU Uranium. U&S Unified and Specified [commands] (pre-1996 term). U.K (UK) United Kingdom. ! ?- F* t( i& a) P+ V3 |- OU.S. (US) United States. U.S. West U.S. West Incorporated. U.S.S.R. Union of Soviet Socialist Republics. 3 y" `: G, o' y& r, R# W; N) W6 z; RUA User Assessment (NMD BMC3 term). , q# X& ?+ t) y# Y8 _/ m/ kUAE United Arab Emirates. UAV Unmanned Aerial Vehicle. UAV BPI Unmanned Aerial Vehicle-based Boost Phase Intercept. UCAP UAV Combat Air Patrol. # O( R3 N5 m, S+ _2 ~3 i3 rUCC Uniform Commercial Code (US legal term). UCP Unified Command Plan. UD/ASD United Defense/Armaments Systems Division. UDMH Unsymmetrical Dimethylhydrazine (a liquid propellant rocket fuel). UDS Universal Documentation System. A standardized comprehensive tool for stating + `. r/ ]. l( L- \and coordinating program requirements for testing MRTFB ranges, as well as the capabilities and plans of test ranges to support program requirements. It / A# F8 G. A. c6 g' h0 Aconsists of a series of six planning and execution documents: 10 are the Program Introduction (PI) (also called the Program Introduction Document (PID)), 6 a7 _4 U3 p6 n9 T, i( p3 K2) Statement of Capability (SC), 3) Program Requirements Document (PRD), 4) Operations Requirements (OR), 5) Program Support Plan (PSP), and 6) the Operations Directive (OD). The UDS was developed and is regulated by the Range Commanders Council (RCC).

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UE Unit Equipment. 8 v/ b2 W9 ~3 D, W; ?: X3 jUEME Unified Electro-Magnetic Effects. UEWR Upgrade Early Warning Radar. 5 J6 c7 z3 r. G" s$ r, BUF4 Uranium tetra fluoride. UF6 Uranium hexafluoride. MDA GLOSSARY, VER. 4.0 U 310 0 B& o/ k. E% c4 J! x5 sUFG User Focus Group. {2 B( @1 d3 F( ^UFO UHF Follow-On [Satellite Communications System]. 6 Z {" E' @& LUFP Unit Flyaway Price. 3 L" p& r& E, SUGF Underground Facility. UGS Unattended Ground Sensors. + C ^0 ]) q8 fUGT Under Ground Test. 6 o9 z/ D1 e7 I6 S: ]% m; K* j' F/ fUHF Ultra High Frequency. UIC Unit Identification Code. 4 L4 t3 x4 w- M, j: oUIN User Interaction Node. 0 w8 g' h6 a# S* a5 |. H/ nUKAS (1) UK Architecture Study (2) UK Associate Studies. UKEADTB UK Extended Air Defense Test Bed. UKTB United Kingdom Test Bed. 4 X4 c5 Q* o& B. K( V8 H& fULCS Unit Level Circuit Switch (SINCGARS term). ULS Unit Level Switch. ULSA Ultra Low Sidebobe Antenna. ( S2 F- R) E# G' i: T& b2 a UULTDS Unit Level Tactical Data Switch (SINCGARS term). , l0 y! ^+ Y% w, r7 T: eUltraviolet (UV) Electromagnetic radiation of wavelength between the shortest visible violet H" H8 x# Q. e$ g( o* R(about 3,850 Angstroms) and soft x-rays (about 100 Angstroms). ) H( {- I/ m5 [3 v5 ]9 nUMD Unit Manning Document. , ?* r+ u: Y. \+ IUMMIPS Uniform Material Movement and Issue Priority System (ILS term). UNAAF Unified Action Armed Forces. , e g; w% p$ x9 P$ w1 RUNC United Nations Command. . b/ Z$ p* d& u" f' \) S/ \0 zUnconventional * u( T* ]1 W6 D% h/ |, p3 |Warfare % i/ @3 x, P7 w2 T9 wA broad spectrum of military and paramilitary operations conducted in enemyheld, enemy-controlled or politically sensitive territory. Unconventional warfare ! I: y* @( {) i& f; kincludes, but is not limited to, the interrelated fields of guerrilla warfare, evasion and escape, subversion, sabotage, and other operations of a low visibility, 6 q! A) ]% b H4 Rcovert, or clandestine nature. 6 e. u2 Z& V1 @/ R. _' OUnified Action Armed Forces A publication setting forth the principles, doctrines, and functions governing the ) q% W) Y3 i: j, }; Jactivities and performance of the Armed Forces of the United States when two or - N3 h' q j+ ?8 b* e( {( g/ _more Services or elements thereof are acting together. 8 o$ z3 ]. Z5 K% T, b5 a# AUnified Command A command with a broad continuing mission under a single commander and , A8 Q- h7 C; G9 V! l& s3 Lcomposed of significant assigned components of two or more Services, and # p: l1 u0 Q6 ^7 Vwhich is established and so designated by the President, through the Secretary of Defense with the advice and assistance of the Joint Chiefs of Staff. 0 S- _3 u5 {- d* W6 v( nMDA GLOSSARY, VER. 4.0 U 311 1 @ X( q( F+ C3 dUNISYS UNISYS Corporation. United States $ e& X2 y5 w' U0 U) P# T. l3 @Army Space Command 3 Z! K. Y a6 c. _$ U(USARSPACE) The Army component command of USSPACECOM. Responsible for the Army 2 K0 \4 L) y7 w/ b v% Qelements of the SDS system. Located in Colorado Springs, CO. 3 @% b+ n. z' [4 f# b' iUnited States ; [4 E' n7 J" V. kSpace Command & i7 q) U- e6 v) c" s( h5 O(USSPACECOM) " l1 Q5 W7 A! PThe unified command responsible for planning and conducting ballistic missile ; r9 z; B8 ~3 r7 T" a# l9 [defense. Located in Colorado Springs, CO. United States . c8 ^( l+ V" l- X M: V" L2 WStrategic & R6 K1 W( `( V/ c) V; uCommand (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. n0 u, ~! j. B5 TUnited States 4 T W o/ V; _Transportation - I& K% }, S2 S+ N0 S2 K6 MCommand (USTRANSCOM) 0 [- a% U2 r' q/ `1 \) gThe DoD unified command responsible for providing air, land, and sea transportation for the Department of Defense, both in time of peace and time of war. It is also responsible for providing airlift, sealift, surface transport, and % i2 U/ W# u( tterminal 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 Objects so closely spaced with respect to the sensor focal plane as to be indistinguishable from a single object. * B0 T- R. }) R; v0 oUNSC United Nations Security Council. , a9 x3 q7 c6 K( G4 x" z, r# Z/ SUnSecEnergy Under Secretary of Energy. % Q1 b0 n# p, ?' c' }UOC Usable on Code (ILS term). UOES See User Operational Evaluation System. # W1 U b2 i9 O5 gUPD Unconventional Passive Discrimination. UPS Uninterruptible Power Source. UQT Unit Qualification Training (ILS term). ; R0 c) o/ c- Q1 i0 R7 ?URIP University Research Initiative Support Program. 2 T- c0 [5 {; J% W1 a# B; NURL Uniform Resource Locator (internet protocol term). URT Upgraded RTD. US/UK United States/United Kingdom. 8 u* F. H% }: a! w; p3 l! W5 Y& YUSA (1) United States Army. (2) Under Secretary of the Army. * O. P4 H4 j& S1 [USAADASCH U.S. Army Air Defense Artillery School. USAAE U.S. Army Acquisition Executive. M/ v% [; s. m E' L8 K1 ^9 ZMDA GLOSSARY, VER. 4.0 U 9 O' `0 Z- G* r- t; }# w312 USACE United States Army Corps of Engineers. USACOM United States Atlantic Command, Norfolk, VA. : s9 u' B% @/ r* b* q3 CUSAF United States Air Force. 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 Systems Command /SSD. USAF/OTEC U.S. Air Force Operational Test and Evaluation Center. * O: ]! ]# h6 `, m B& q1 AUSAF/SMC U.S. Air Fore Space and Missile Systems Center, Los Angeles AFB, CA. / n3 n1 M) b0 tUSAF/SSD U.S. Air Force/Space Systems Division; See USAF/AFMC/SMC. USAFE U.S. Air Forces in Europe. USAFLANT U.S. Air Force, U.S. Atlantic Command. USAKA U.S. Army Kwajalein Atoll. . r" W) [5 b" Q, D, xUSAMICOM U.S. Army Missile Command, Redstone Arsenal, AL. USAMSIC See MSIC. 9 x; m6 e0 S/ k; e! ZUSAMSAA U.S. Army Materiel Systems Analysis Activity. " I8 A% [$ r2 p5 nUSAOEC 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. USARLANT U.S. Army Forces, U.S. Atlantic Command. USARPAC U.S. Army Forces, U.S. Pacific Command. 0 Z5 S4 d" {, W! k- N8 _" d! wUSARSPACE 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. 1 @, \- o* [' YUSB Upgraded SBD. USC U.S. Code. 1 [) _" Z" C* D H, F3 WUSCENTAF U.S. Central Command Air Forces. MDA GLOSSARY, VER. 4.0 U ; Y/ r! S0 X6 [0 ]1 B313 USCENTCOM United States Central Command, MacDill AFB, FL. $ ]+ \( m8 i+ ^3 b6 PUSCG United States Coast Guard. USCINCCENT Commander in Chief, U.S. Central Command. USCINCEUR U.S. Commander in Chief, Europe. * r! c ~' P/ T, g- V8 q0 MUSCINCLANT Commander-in-Chief, U.S. Atlantic Command. / J+ b1 K6 L/ L/ s, {) [( b* QUSCINCPAC Commander-in-Chief, U.S. Pacific Command. 9 o4 T( a' `$ i* f' WUSCINCSPACE Commander-in-Chief, U.S. Space Command. USCINCTRANS Commander in Chief, U.S. Transportation Command. * B' c2 q9 ^) x8 t7 U W% BUSCS U.S. Customs Services. USD Under Secretary of Defense. - {$ N: q$ x0 Y" N' iUSD(A&T) Undersecretary of Defense (Acquisition and Technology). USD(A) OBSOLETE. Under Secretary of Defense (Acquisition.). USD(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. : U. n5 z, |5 r7 |; a" o4 _USDELMC U.S. Delegation to the NATO Military Committee. 2 t) ]: X+ b: F3 L5 K0 A D 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 (hardware) or program (software) that is compatible with a person's ability to 6 M/ e. n8 p& `. ^$ foperate it successfully and easily. User Operational ' B6 H0 Z4 c* tEvaluation System (UOES) / d1 E& u. ^# k* L: A6 [Prototypical system developed and tested as part of the early phases of the - C( f) D" \8 R! e" ~development process. A UOES has two objectives: (1) testing, evaluation, and ( n7 J7 D1 O" O @; X' i" Qtraining for a system proceeding through the normal acquisition process; and (2) ' s5 G/ B. _& y, Bcontingency defense capability should the need arise prior to completion of the normal acquisition cycle. ; z9 |7 q& X- [, S: l1 cUSEUCOM United States European Command, Stuttgart-Vaihingen, Germany. ) g. l% g4 z: n% c: T/ FUSFJ U.S. Forces Japan. ( M4 t7 t! w- I% |# TUSFK U.S. Forces Korea. USFK/CFC CSFK Combined Forces Command. ^) V# k6 V' _: KUSG U.S. Government. USIA United States Information Agency.

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MDA GLOSSARY, VER. 4.0 U 314 USLANTCOM United States Atlantic Command (Now see USACOM). ' a6 X& X D+ W5 K# z' aUSLANTFLT U.S. Atlantic Fleet. 2 p) C" ]+ p; O6 r z3 MUSMAR- # Q' q( Y- P) j! n* l) hFORCENT U.S. Marine Component, U.S. Central Command. USMAR-FORLANT U.S. Marine Component, U.S. Atlantic Command. 4 H3 k8 m* ]2 e& o, Z, T. b/ LUSMAR-FORPAC U.S. Marine Component, U.S. Pacific Command. USMC United States Marine Corps. ' F2 E) q- u+ u, K& u' B* x" CUSMCR United States Marine Corps Reserve. 4 ^1 W' ^2 {, MUSMILREP U.S. Military Representative. / g- A" {0 ?2 c. `& T8 d V1 v+ YUSN United States Navy. + v% G7 o. P: z4 cUSNAVCENT U.S. Naval Forces, U.S. Central Command. + Y' V% G# G- t+ d* ~2 {USNAVEUR U.S. Naval Forces, U.S. European Command. USNIP U.S. Naval Institute Proceedings. USNO U.S. Naval Observatory. USNPGS U.S. Naval Post-Graduate School. * H' p2 x7 `. w! z8 Y6 ]USPACAF U.S. Air Forces, U.S. Pacific Command. USPACFLT US Pacific Fleet. * L/ L# d, Q% {) nUSPACOM United States Pacific Command, Pearl Harbor, HI. 3 K( I" `$ \4 u' f4 fUSREPMC U.S. Representative to the Military Committee (NATO). USSC United States Space Command. ! r) S& v! H; I1 m; sUSSOCOM United States Special Operations Command, Tampa, FL. USSOUTHCOM United States Southern Command, Panama Canal Zone, Panama. ; ]9 y S2 n( L3 `% Y2 }- U0 oUSSPACECOM See United States Space Command. ' d; B9 h) U0 E: y2 P' x( HUSSS United States Secret Service. & x4 W4 V7 T. qUSSTRATCOM See United States Strategic Command. USTA United States Telephone Association. - {, I% U) ]. o" o, j* _) Z+ aUSTRANSCOM See United States Transportation Command. UT Universal Time. UTC Unit Type Code. 1 n9 x+ B l( }- s( U1 d) FMDA GLOSSARY, VER. 4.0 U 315 - g5 Z6 c" ]% {! u$ uUTM Universal Transverse Mercator. UTTMDS Upper Tier Theater Missile Defense System. See THAAD System. l0 D/ ?& ]& K. j6 W7 D; dUUT Unit Under Test (ILS term). % n( N( u D6 B1 L' W4 W1 X' L7 zUV Ultraviolet. # q$ o* R) |3 N* r Q2 i3 f6 MUV Electro- : U, e- u, j/ V4 g0 A8 {7 z( r( bOptics Technologies/techniques employed by optical sensors in the wavelength spectrum shorter than visible (e.g., less than 4,000 A). 3 E7 J3 a6 X+ R4 Q* e- ^+ rUVPI Ultraviolet Plume Instrument. 1 F2 b( H& c" {UW Unconventional Warfare. MDA GLOSSARY, VER. 4.0 V 316 V Volt. 7 z( ]6 y& S4 m, M6 EV&H Vulnerability and Hardening. - C1 J* ~+ K. n, Z8 QV&V Verification and Validation. (See Verification, Validation, and IV&V.) V/STOL Vertical Short Takeoff and Landing [aircraft]. 3 Y$ }& l. }- |+ u2 v6 JVAFB Vandenberg Air Force Base, CA. Validation Confirmation that the processes and outputs from a test resource parallel real # W4 H* A6 `$ [6 c+ Aworld 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. VAR Visitor Access Request. Variability The manner in which the probability of damage to a specific target decreases 3 ]! n9 J) l* R6 Jwith the distance from ground zero; or, in damage assessment, a mathematical factor introduced to average the effects of orientation, minor shielding, and uncertainty of target response to the effects considered. VBO Vertical Burn-Out (velocity). # r- }5 x' C& s2 c. \: `# j3 d# DVCC Voice Communications Circuit. 6 p6 b4 `9 N0 M% ?6 f6 PVCRM Verification Cross Reference Matrix. VCS Voice Communications System. * j% q. D- M0 e0 u$ Y$ uVDC Volts Direct Current. 1 M A' L, ^. B6 ?+ L W6 OVDD Version Description Document. VDU Visual Display Unit. VE Value Engineering. VECP Value Engineering Change Proposal. ) k& Y. j' Z9 ^ e3 rVerification (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 l% x; J; n* M$ c(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. $ G8 z) Q0 s. YVESA Video Electronics Standards Association. 9 ?& w* Z: `9 `1 N( xVFR Visual Flight Rules. VGA Video Graphics Array (Telecomm/Computer term). VHF Very High Frequency. % ?, a4 ~/ X0 {$ I1 VVHSIC Very High Speed Integrated Circuit. MDA GLOSSARY, VER. 4.0 V 317 VIDS 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 circuitry and commercial components. Project also demonstrates VIRGIL, a gimbaled airborne sensor with visible, experimental UV and quantum-well IR cameras capable of tracking targets that can be detected, identified, and precision-tracked with the ANTE processor. VIM Vibration Isolation Module. 3 V" K* U& E5 j+ lVINSON Encrypted Ultra High Frequency Communications System. VIS Visible. VIS/UV Visible/Ultraviolet. Visibility Range % L( @: @2 W# c6 Y/ z! J) I(or Visibility) d: |. W- l& y: k h' i3 W2 m$ tThe horizontal distance (in kilometers or miles) at which a large dark object can ; b+ C1 T( C6 G: Xjust 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 4 a) R+ u, E3 N5 k/ ?exceptionally clear atmosphere to 0.6 mile (1.0 kilometer) or less for dense haze ; @4 n# d' k# v4 ?* r Z4 [or fog. The visibility on an average clear day is taken to be 12 miles (19 kilometers). 3 m! I4 @ E L$ YVisible Electro- Optics " S* z4 r1 E" aTechnologies/techniques employed by optical sensors in the visible portion of the wavelength spectrum. 7 p1 Q+ O2 M( v8 RVLAR Vertical Launch and Recovery (UAV JPO term). $ ^% @2 Q% k- w c9 I* I5 jVLF Very Low Frequency. VLOS Vertical Line of Sight.

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VLS Vertical Launch System. VLSI Very Large Scale Integration. VLSIC VLSI Circuits. VLWIR Very Long Wavelength Infrared. ' S3 C, i- b z4 G$ I6 S5 gVME Versa Modular European [standards]. VMF Variable Message Format (Telecomm term). 5 b. h- d' g1 lVOX Voice Actuation. % Q' d& d+ l1 D5 QVRI Vanguard Research, Inc., Fairfax, VA. VTC Video Teleconference. " n# B; ^% |7 M* C7 q( w# Q8 E; fVTOL Vertical Takeoff and Landing [aircraft]. 7 d) p/ @, f3 P( b. Q8 C$ K9 w, nVTOL-UAV Vertical Takeoff and Landing Unmanned Aerial Vehicle. 9 `; j$ ?# K+ Y2 \# oVUE Visible Light/Ultraviolet Experiment. 1 D5 S( V7 E& n9 r8 I4 m# uMDA GLOSSARY, VER. 4.0 V 318 Vulcan UK bomber. 9 I! e( z) P, F( tVV&A Verification, Validation, and Accreditation. VVER Pressurized water type nuclear power reactor. ! V! A3 q% x8 |VVIRF Verification and Validation Information Request Form. & l; a( f0 @0 {/ B" f4 \9 jMDA GLOSSARY, VER. 4.0 W 319 W/ With. * k& Y/ u( t! `; f' l4 Mw/o Without. . C% m! `# w$ t# f( g4 M4 ?W/TD Warning/Threat Detection. 1 W1 R( y8 |6 g* m+ FWAA Wide Aperture Array. % \; V0 [- ^& _. gWALEX Warfare Analysis Laboratory Exercise. . k9 l/ [& H" J0 |; c4 lWAM (1) Worldwide Military Command and Control System (WWMCCS). (2) Wide Area Munition. (3) Wide Area Mine. (4) Wide Area Missile. & Q/ e* U! D% @0 n0 C1 f/ @ \WAN Wide Area Network (Telecomm/Computer term). WAP Wide Azimuth Probe. War Game A simulation, by whatever means, of a military operation involving two or more opposing forces, using rules, data, and procedures designed to depict an actual or assumed real life situation. + I$ `% J8 o' `& z, |5 \1 `Wargame 2000 Title of MDA program for development of a state-of-the-art simulation tool at the 5 l- B9 t% Q- ]3 `# \5 Q' gJNTF for use in CONOPS validation, missile defense program design verification, & J0 X6 M$ G0 Y) M# Hvalidation and accreditation, and support CinC/Allied wargames and assessments. Warhead 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 $ p p" y# G" f& T: c& acomponents. WARM Wartime Reserve Modes. , b/ O2 H& `' \8 T2 `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. 0 V' A* Z) d K) P* I6 rWarning Order A preliminary notice of an order or action that is to follow. " w$ x0 [) X: }WARSIM Warfighter Simulation (US Army term). WARSIM 2000 Warfighter Simulation 2000 (US Army term). / L; Y$ i" P* D# IWartime Reserve Modes (WARM) & d. Y; y& Y- F7 PCharacteristics and operating procedures of sensor, communications, navigation ! J4 ^4 t1 J4 ]7 z) naids, threat recognition, weapons, and countermeasures systems that (1) will contribute to military effectiveness if unknown to or misunderstood by opposing 4 ~5 H! B5 ^8 I+ F9 @3 kcommanders before they are used, but (2) could be exploited or neutralized if " N# D3 k- ^- E. E Y+ r) G7 iknown in advance. Wartime reserve modes are deliberately held in reserve for wartime or emergency use and seldom, if ever, applied or intercepted prior to : H! Q6 J d% Y/ P: ^" Csuch use. WAS Wide Area Sensor. WASP Wide-body Airborne Surveillance Platform. A modified DC-10. 0 g3 k8 h5 B5 P: QMDA GLOSSARY, VER. 4.0 W + A3 G2 M, E2 E& O; E320 WASHDC Washington, District of Columbia. Wastage (Max) The maximum number of defense weapons which, when used, will be ineffective : S G: x/ F. B4 A: Fin contributing to the defeat of the offense. / Q1 K o6 v+ @" F4 E, u. y4 oWatch Condition (WATCHCON) & D6 c/ ~2 J) R8 x' { uSeries of readiness conditions used by the intelligence community to alert staffs to watchfulness without raising DEFCON. WATS Wide Area Telephone System. 9 X6 v; n: {0 B h2 R( _WAVE Wideband Angular Vibration Experiment. 4 y* Y1 Y+ k# Z- n Y& \7 D" XWavelength The distance between two points having the same phase in two consecutive : z, o; G) s$ e8 o! h: }2 E2 H& `cycles of a periodic wave, along a line in the direction of propagation. WB Wideband. - A' P- ?3 P2 i/ f" ZWBM Weapons Battle Manager(s). 4 u7 p0 S6 i. J, N* EWBS See Work Breakdown Structure. WCC (1) See Wing Control Center. (2) Weapons Control Computer. 5 @3 s S5 U }2 ZWCG Workstation Computer Graphics (Computer term). WCP (1) Weapon Control Processor. (2) Weapon Control Platform. WCS Weapons Control System. WDM Wavelength Division Multiplexon. Weapon Enabling The set of control functions without which defense weapons cannot be 2 n+ |0 v( ]# ?3 Dlaunched.