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sense aerial

См. также в других словарях:

  • sense aerial — A type of nondirectional radio antenna used with an automatic direction finder, which picks up signals with equal strength from all directions. The sense aerial helps remove the 180° ambiguity, which is a feature of highly directional loop… …   Aviation dictionary

  • sense switch — A switch in the direction finder that introduces a sensing circuit in the receiver. It is used to determine the true null position and helps in resolving 180° ambiguity. Such a switch is found in the older manually operated as well as older… …   Aviation dictionary

  • aerial — [er′ē əl; ] for adj., also [ ā ir′ē əl] adj. [< L aerius < aer (see AIR) + AL] 1. of, in, or by the air 2. like air; light as air 3. not substantial; unreal; imaginary 4. high up; lofty …   English World dictionary

  • aerial perspective — a technique of rendering depth or distance in painting by modifying the tone or hue and distinctness of objects perceived as receding from the picture plane, esp. by reducing distinctive local colors and contrasts of light and dark to a uniform… …   Universalium

  • loop aerial — An aerial designed for direction finding use and normally used in airborne direction finding equipment. A vertical polarized radio wave incident upon the loop induces voltage in the vertical members of the loop. The signal induced voltage will… …   Aviation dictionary

  • Fly-n-Sense — Création 28 juillet 2008 Forme juridique SAS …   Wikipédia en Français

  • Direction finding — (DF) refers to the establishment of the direction from which a received signal was transmitted. This can refer to radio or other forms of wireless communication. By combining the direction information from two or more suitably spaced receivers… …   Wikipedia

  • Cloudscape (art) — A cloudscape by Jacob Isaakszoon van Ruysdael. (This article concerns painting and other non photographic media. Otherwise, see cloudscape photography.) In art, a cloudscape is the depiction of a view of clouds or the sky. Usually, as in the… …   Wikipedia

  • automatic VHF/DF — A ground based direction finding system in which, instead of manually turning the DF aerial to find the null position, it is done automatically. The direction of the transmitting source is immediately indicated on the CRT (cathode ray tube)… …   Aviation dictionary

  • automatic direction finder — Equipment to determine the direction from which an electromagnetic signal is being generated. It can either be airborne or ground based equipment. It operates in medium or low frequencies, consists of basically a loop aerial, and gives the null… …   Aviation dictionary

  • DF — A radio receiver equipped with a direction sensing antenna used to take bearings on a radio transmitter. A direction finder essentially consists of a loop aerial. To remove 180° ambiguity, a sense aerial is also brought into the circuit. The DF… …   Aviation dictionary

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