TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 OBS

Constant False-alarm Rate(CFAR). A constant false-alarm rate in the presence of variable levels of noise is usually a requirement placed on any modern radar. It is easily achieved in CW radars by use of filter banks. The energy reaching the filter bank is restricted either by automatic gain control or, when feasible, by limiting, and the thresholds in the circuitry following the filter bank are properly set with respect to the level in the total band. In a typical setting technique, random noise is injected into the amplifier that drives the filter bank, and each threshold is set to achieve the desired false-alarm rate. The level of noise is then varied and the threshold rechecked. If the limiting is proper, the false-alarm rate should not change. However, target signals in the absence of noise are unaffected, as they do not change the total energy present in the broad doppler spectrum sufficiently to reach the limiting level.  1, record 1, English, - constant%20false%2Dalarm%20rate

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 OBS

taux prédéterminé pour permettre à un récepteur de recevoir des échos de fausses cibles sans les traiter comme échos de cibles réelles.  5, record 1, French, - taux%20de%20fausse%20alarme%20constant

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

Jamming in which the centre frequency of a waveform is swept back and forth over a relatively wide operating band of frequencies. [Definition officially approved by the Joint Terminology Panel.]  2, record 2, English, - sweep%20jamming

Record number: 2, Textual support number: 2 DEF

A narrow band of jamming that is swept back and forth over a relatively wide operating band of frequencies. [Definition standardized by NATO.]  3, record 2, English, - sweep%20jamming

Record number: 2, Textual support number: 1 OBS

Sweep jamming is normally associated with noise jamming but can also be carried out with waveforms that mimic target returns.  2, record 2, English, - sweep%20jamming

Record number: 2, Textual support number: 2 OBS

sweep jamming; swept jamming: designations officially approved by the Joint Terminology Panel.  4, record 2, English, - sweep%20jamming

Record number: 2, Textual support number: 3 OBS

sweep jamming: designation standardized by NATO.  4, record 2, English, - sweep%20jamming

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Brouillage effectué en promenant la fréquence centrale d'une forme d'onde sur une large bande de fréquences d'exploitation. [Définition uniformisée par le Groupe d'experts en terminologie interarmées.]  2, record 2, French, - brouillage%20par%20balayage

Record number: 2, Textual support number: 2 DEF

Technique consistant à promener une émission de brouillage sur une large bande de fréquences. [Définition uniformisée par le Groupe d'experts en terminologie interarmées.]  3, record 2, French, - brouillage%20par%20balayage

Record number: 2, Textual support number: 1 OBS

Le brouillage par balayage est normalement associé au brouillage par bruit, mais il peut aussi être effectué au moyen de formes d'onde qui imitent les retours de cibles.  2, record 2, French, - brouillage%20par%20balayage

Record number: 2, Textual support number: 2 OBS

brouillage par balayage; brouilBAL : désignations uniformisées par le Groupe d'experts en terminologie interarmées.  4, record 2, French, - brouillage%20par%20balayage

Record number: 2, Textual support number: 3 OBS

brouillage par balayage : désignation normalisée par l'OTAN.  4, record 2, French, - brouillage%20par%20balayage

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Técnicas de interferencias en la que se hace un barrido hacia atrás y hacia adelante sobre una banda de frecuencias relativamente amplia.  1, record 2, Spanish, - interferencias%20mediante%20barrido

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

In many target tracking problems, in order to obtain more accurate and robust tracking performance, a dynamic target is often detected by multiple disparate sensors, each with different measurement dynamics and noise characteristics.  2, record 3, English, - dynamic%20target

Record 3,  Textual support,  French

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

A type of sonar which detects, noise emissions by means of multi-array hydrophones and uses a computer to calculate distance or range of target.  2, record 4, English, - passive%20ranging%20sonar

Record number: 4, Textual support number: 1 OBS

passive ranging sonar: term officially approved by the Naval Terminology Standardization Committee.  3, record 4, English, - passive%20ranging%20sonar

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 OBS

sonar passif de télémétrie : terme uniformisé par le ministère de la Défense nationale.  3, record 4, French, - sonar%20passif%20de%20t%C3%A9l%C3%A9m%C3%A9trie

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 OBS

Radar circuit that enhances automatic target detection capability, provides data for digital target plotting, and gives improved community to noise, interference, and jamming.  2, record 5, English, - video%20correlator

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Dispositif qui mesure la cohérence entre deux formes d'ondes afin de détecter des signaux faibles perdus dans le bruit.  2, record 5, French, - corr%C3%A9lateur%20vid%C3%A9o

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

The definition and validation of new advanced criteria for the cabin comfort judgement will help the aircraft operators and the aircraft manufacturers to understand better and finalise requirements for passenger comfort satisfaction. The project activities target some of the key needs in this field :(i) Broadband noise component reduction for light weight composite fuselage.(ii) Cabin air-quality improvement by reducing the contamination and improving the thermal and humidity comfort parameters.(iii) friendly utilisation of the on-board multimedia system.  1, record 6, English, - on%2Dboard%20multimedia%20system

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

Thales annonce mercredi la signature, au Salon du Bourget, avec Air France, d'un contrat pour équiper la flotte A380 d'Air France (10 avions en commande ferme et 4 en option) du système de multimédia de bord TopSeries i5000 de Thales. Simple et facile d'utilisation, convivial et permettant d'offrir à nos clients un large choix de programme, le système TopSeries i5000 a été retenu pour équiper nos A380 qui desserviront d'abord Montréal et New York, puis Pékin et Tokyo avec à bord, 538 passagers, a souligné Jean Cyril Spinetta, Président d'Air France.  2, record 6, French, - syst%C3%A8me%20de%20multim%C3%A9dia%20de%20bord

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

A new kind of L-band long-range surveillance radar family designed not only for air traffic control and air defense but also for shipboard air defense.... The radar's features include a high-gain, low-sidelobe, shaded beam antenna; a master oscillator power amplification transmitter with a combination of a solid state amplifier and wide-band klystron; and a wideband receiver with low noise and three channels. Quadraphase coded pulse compression techniques are employed. The digital target extractor can extract, process, and report the target data automatically.  1, record 7, English, - digital%20target%20extractor

Record 7,  Textual support,  French

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

A circuit which is supposed to detect the existence of a target without being confused by noise.  2, record 8, English, - detection%20circuit

Record 8,  Textual support,  French

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

A device which linearly combines the video signals in a pulse train such that the target returns are enhanced with respect to receiver noise.  1, record 9, English, - video%20integrator

Record 9,  Textual support,  French

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 DEF

Electronic countermeasure technique when a high level jamming signal is transmitted, thus causing large automatic gain control voltages to be developed at the radar receiver that, in turn, cause target pip and receiver noise to completely disappear.  2, record 10, English, - sawtooth%20modulated%20jamming

Record 10,  Textual support,  French

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 DEF

Random variations in observed amplitude, location, and Doppler of a target, caused by changes in target aspect angle, rotation or vibration of target scattering sources, or changes in radar wavelength.  2, record 11, English, - target%20noise

Record 11,  Textual support,  French

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 DEF

Target representation that does not correspond to the position of an aircraft(e. g., caused by receiver noise, stationary clutter, precipitation clutter, etc.)  1, record 12, English, - false%20detection

Record 12,  Textual support,  French

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 DEF

Radar in which a swept-frequency signal is transmitted, received from a target, and then compressed in time to give a final narrow pulse called the chirp signal. It has high immunity to jamming and an inherent rejection of random noise signals.  3, record 13, English, - chirp%20radar

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 DEF

Radar émettant un signal rectangulaire modulé linéairement en fréquence et qui, historiquement, a été le premier radar à compression d'impulsion.  2, record 13, French, - radar%20chirp

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 OBS

(...) an indication of a detected target even though one does not exist, due to noise or interference levels exceeding the set threshold of detection.  2, record 14, English, - false%20alarm

Record 14,  Textual support,  French

Record number: 14, Textual support number: 1 OBS

À un instant donné, la puissance à l'entrée de l'amplificateur vidéo aura par exemple l'allure de la figure 2.3 : si l'indicateur est réglé pour s'éclairer chaque fois que le signal qu'il reçoit dépasse le seuil de puissance [...], il y aura trois plots visibles; l'un correspondant au signal et deux autres correspondant à des pointes de bruit. Les deux derniers plots constituent des fausses alarmes [...]  2, record 14, French, - fausse%20alarme

Record 14,  Textual support,  Spanish