TERMIUM Plus^®

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Collision avoidance radars-like the one built by Fontana's Multispectral Solutions-are another ultrawideband strength. Initially built to serve the proximity of obstacles to unmanned aerial vehicles, such systems could serve as backup sensors in cars.  2, fiche 1, Anglais, - collision%20avoidance%20radar

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Ainsi, comment ne pas être intéressé par ce radar anticollision qui, équipant (en option entre 5.000 francs et 7.000 francs) ce vaisseau, vous amènerait presque à penser que désormais conduire les yeux fermés est devenu une réalité. De quoi s'agit-il? Complément du régulateur de vitesse classique Tempomat, l'option Distonic gère l'intervalle de sécurité qui vous sépare d'un autre véhicule grâce à un capteur radar niché dans la calandre. Au millième de seconde et sans relâchement, cet œil vigilant mesure l'écart entre votre Classe S et l'obstacle qui la précède, ainsi que la vitesse relative d'un éventuel rapprochement jusqu'à 150 mètres et 160 km/h.  2, fiche 1, Français, - radar%20anticollision

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A type of DEW [directed-energy weapon] that uses RF [radio-frequency] energy to upset or damage the electronics of a target.  5, fiche 2, Anglais, - radio%20frequency%20weapon

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RF weapons are usually divided into two categories : high power microwave(HPM) weapons and ultrawideband(UWB)(or video pulse) weapons.  6, fiche 2, Anglais, - radio%20frequency%20weapon

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The primary distinction between RF weapons and more conventional EW systems is that RF weapons actually affect the electronics and not just the electronic environment, thereby causing temporary or permanent electronics failure that persists even after the RF beam has been turned off. RF weapons will mainly target receiver systems with in-band HPM [high-power microwave] radiation or computer systems with ultrawideband impulses.  5, fiche 2, Anglais, - radio%20frequency%20weapon

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In a radio-frequency weapon, electromagnetic radiation at wavelengths similar to that of radar is aimed at a target by means of an antenna. The principal effect would be to damage or destroy the electronic circuits of a missile.  7, fiche 2, Anglais, - radio%20frequency%20weapon

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An ultrawideband transmitter, however, works like a tuning fork. Striking a tuning fork causes it to vibrate, sending out sound waves at a particular frequency. A semiconductor chip in an ultrawideband radio "hits" an antenna with carefully timed electrical pulses; the antenna responds by generating radio waves at every frequency possible.  1, fiche 3, Anglais, - ultrawideband%20transmitter

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Pour en savoir plus, nous vous suggérons de lire une prochaine note technique qui parlera de l'effet des émissions issues de nombreux émetteurs à bande ultra large (UWB) sur le niveau de bruit (NT-260, intitulée «Effects on Noise Level of Radiated Emissions of Multiple Ultra Wideband (UWB) Transmitters»).  1, fiche 3, Français, - %C3%A9metteur%20%C3%A0%20bande%20ultra%20large

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Preliminary tests by NASA's Langley Research Center using ultrawideband emitters placed inside and outside United Airlines planes show that even at frequencies that the FCC [Federal Communications Commission] is permitting, ultrawideband interference could compromise the instrument landing system pilots use to land in bad weather.  1, fiche 4, Anglais, - ultrawideband%20interference

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... ultrawideband noise could additionally affect voice communications between air traffic controllers and pilots, the radars air traffic controllers use to track aircraft, and the collision avoidance system designed to prevent planes from crashing in midair.  1, fiche 5, Anglais, - ultrawideband%20noise

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In the future, ultrawideband links could distribute extremely information-rich content, endowing a home or office with high-resolution 3-D virtual-reality simulation.  1, fiche 6, Anglais, - ultrawideband%20link

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Sony and newcomer XtremeSpectrum in Vienna, VA, for instance, are both pursuing the possibility of using ultrawideband transmission to wirelessly link DVD players, stereos and TVs in home entertainment systems.  1, fiche 7, Anglais, - ultrawideband%20transmission

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Ultrawideband tags could let robotic lawn mowers or vacuum cleaners go about their tasks without ever hitting a tree or a sofa.  1, fiche 8, Anglais, - ultrawideband%20tag

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