TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 OBS

[The pulse acquisitiion radar is] a search radar with a 20 rpm [revolutions per minute] rotation for high/medium altitude target detection.  1, record 1, English, - pulse%20acquisition%20radar

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 OBS

Le radar d'acquisition à impulsions (PAR) assure la couverture à moyenne et haute altitude à grande distance.  1, record 1, French, - radar%20d%27acquisition%20%C3%A0%20impulsions

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

... DInSAR [differential interferometry synthetic aperture radar] can measure differential propagation delay with millimetric accuracy as in the case of the C-band synthetic aperture radars of the European Sentinel-1 satellites.  3, record 2, English, - C%2Dband%20synthetic%20aperture%20radar

Record number: 2, Textual support number: 1 OBS

synthetic aperture radar; SAR :[A] synthetic aperture radar(SAR) is a side-looking imaging radar usually operating on either an aircraft or a spacecraft. The radar transmits a series of short, coherent pulses to the ground producing a footprint whose size is inversely proportional to the antenna size, its aperture. Because the antenna size is generally small, the footprint is large and any particular target is illuminated by several hundred radar pulses. Intensive signal processing involving the detection of small Doppler shifts in the reflected signals from targets to the moving radar produces a high resolution image that is equivalent to one that would have been collected by a radar with a much larger aperture.  4, record 2, English, - C%2Dband%20synthetic%20aperture%20radar

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

Sentinel-1 est composé de deux satellites (1A et 1B) qui ont pour objectif de fournir en tout temps des images radar. [...] Les satellites [ont chacun] un radar à synthèse d'ouverture en bande C dont la fréquence varie de 5,725 à 7,075 GHz [gigahertz] en émission et de 3,4 à 4,2 GHz en réception.  5, record 2, French, - radar%20%C3%A0%20synth%C3%A8se%20d%27ouverture%20en%20bande%20C

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

... Lockheed Martin's Portable Search and Target Acquisition Radar(PSTAR) [is a] short-range air defense sensor [that] has exceptional subclutter visibility for... detection of both fixed and rotary wing targets... while its ability to detect, identify and classify helicopters is enhanced by an integral IFF [identification friend or foe] antenna.  2, record 3, English, - portable%20search%20and%20target%20acquisition%20radar

Record 3,  Textual support,  French

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, 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 4, English, - video%20correlator

Record 4,  Textual support,  French

Record number: 4, 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 4, French, - corr%C3%A9lateur%20vid%C3%A9o

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

A low level intruder flying at 400 metres per second will travel eight kilometres in 20 seconds. If radar detection occurs at 16 kilometres, and a six second delay prior to firing is assumed, the target is already at 13.  4, record 5, English, - low%2Dlevel%20target

Record 5,  Textual support,  French

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

A low level intruder flying at 400 metres per second will travel eight kilometres in 20 seconds. If radar detection occurs at 16 kilometres, and a six second delay prior to firing is assumed, the target is already at 13.  1, record 6, English, - delay%20prior%20to%20firing

Record 6,  Textual support,  French

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

Radar bearing is determined by the echo signal strength as the radiated energy lobe moves past the target. Since search radar antennas move continuously, the point of maximum echo return is determined either by the detection circuitry as the beam passes the target or visually by the operator.  1, record 7, English, - energy%20lobe

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 CONT

Il a été dit que les mesures de l'avion sont difficiles car les antennes n'avaient pas un lobe de rayonnement assez large, ce qui diminuait la résolution de l'image en azimut car le nombre d'impulsions enregistrées est plus faible. De plus, il n'est pas possible de faire des mesures avec l'antenne-réseau et l'avion car la cible ne demeure pas visible toute la durée de l'acquisition pour tous les éléments du réseau.  1, record 7, French, - lobe%20de%20rayonnement

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 CONT

Main Electronic Assembly(MEA). The MEA consists of a frame assembly and an angulation head. The frame assembly includes the radar system control circuits and the electronic components necessary for target detection processing. An AHA [aerial head assembly] mounting plate, attached to the top of the angulation head, secures the AHA to the MEA. A bearing scale indicator, at the base of the angulation head, can be used for checking the bearing settings and arcs. A level bubble permits accurate levelling of the MEA.  2, record 8, English, - main%20electronic%20assembly

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 CONT

Boîtier électronique principal (BEP). Le BEP est constitué d un bâti et d une plate-forme goniométrique. Le bâti comprend les circuits de commande du système radar et les composants électroniques nécessaires au traitement des données de détection d'objectifs. Une plaque de montage de l'antenne, fixée au sommet de la plate-forme goniométrique, retient l'antenne au BEP. Un indicateur d'échelle de relèvement, au bas de la plate-forme goniométrique, peut servir à vérifier les arcs et les réglages de relèvement. Un niveau à bulle permet de mettre le BEP de niveau avec précision.  1, record 8, French, - bo%C3%AEtier%20%C3%A9lectronique%20principal

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 CONT

... the Aurora will require a long range surveillance radar with additional capabilities such as maritime and land imaging, landstrip-map, Ground Moving Target Indication(GMTI), and improved detection and tracking of airborne targets.  1, record 9, English, - landstrip%20map

Record 9,  Textual support,  French

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 CONT

"No mast? No aerial? Then how do you handle radar surveillance, target designation, communications, and so on?" Target detection and target designation are two different tasks, but a confusion persists because it has been a long-standing rule at sea that ships only engage targets they have detected themselves.  1, record 10, English, - engage%20targets

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 CONT

Si une certaine confusion persiste, c'est que sur mer, une très ancienne tradition veut que les bateaux n'ouvrent le feu que sur les objectifs qu'ils ont détectés eux-mêmes.  1, record 10, French, - ouvrir%20le%20feu

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  French

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 DEF

Detection inherent in any radar system not restricted by line-of-sight or maximum-range detection rejection. It is binary integration of target returns from multiple scans.  1, record 12, English, - cumulative%20detection

Record 12,  Textual support,  French

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 CONT

In an automatic detection radar, the target reports(sometimes called plots) are formed in the radar's signal processor before interaction with a human operator or further data processing.  1, record 13, English, - automatic%20detection%20radar

Record 13,  Textual support,  French

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 DEF

A radar with a new signal processing technique. It reduces the power required to detect and track a target by efficiently combining the target detection and track functions.  1, record 14, English, - automatic%20target%20integration%20radar

Record 14,  Textual support,  French

Record 14,  Textual support,  Spanish

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 CONT

(...), the MTD [Moving Target Detection] principle involves dividing up the entire radar coverage area into small range-azimuth cells-(...) called ’coherent processing intervals’(CPI). Eight pulses generated at a constant repetition frequency are assigned to each cell, and each return is subjected to Doppler filtering over a range of velocity values. The particular feature of MTD is its ability to measure the density of clutter and to detect the sudden presence of an additional element-such as an aircraft moving into a particular cell-even though it may have zero relative velocity on account of its tangential track.  1, record 15, English, - coherent%20processing%20interval

Record 15,  Textual support,  French

Record number: 15, Textual support number: 1 CONT

Le principe du MTD [Moving Target Detection] est de diviser la zone couverte par le radar en secteurs définis en distance et en azimut (...) et appelés «intervalles de traitement cohérent» (ITC). A chaque secteur sont affectées huit impulsions émises selon une fréquence de répétition constante et chaque écho est soumis à un filtrage Doppler couvrant toute une gamme de vitesses. La caractéristique essentielle du MTD est son aptitude à mesurer la densité des échos parasites et à y détecter la présence soudaine de tout élément nouveau - tel qu'un aéronef entrant dans un secteur donné - même si sa vitesse relative est nulle du fait que sa trajectoire est tangentielle.  1, record 15, French, - intervalle%20de%20traitement%20coh%C3%A9rent

Record 15,  Textual support,  Spanish