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radar
Sinônimos - Inglês
radio detecting and ranging
Definição1
An electronic device which, by measuring the time interval between transmission and reception of radio pulses and correlating the angular orientation of the radiated antenna beam or beams in azimuth and/or elevation, provides information on range, azimuth, and/or elevation of objects in the path of the transmitted pulses. Radar, an acronym for Radio Detecting And Ranging, was developed as a military system during World War II. A pulse of high-frequency electrical energy is transmitted from a highly directional antenna. The pulse travels until it strikes an object, then bounces back and is received by the antenna. The return pulse causes a bright spot to appear on the screen of a cathode-ray tube. Radar is used for detecting precipitation, for navigation, and for detecting obstructions to flight. Simplified radar is used for measuring the speed of vehicles on our highways.
Fonte1
CRANE, Dale (ed.). Dictionary of aeronautical terms. 2nd ed. Renton: ASA, 1991.
Fonte2
INTERNATIONAL MARITIME ORGANIZATION; INTERNATIONAL CIVIL AVIATION ORGANIZATION. IAMSAR manual: international aeronautical and maritime search and rescue manual. Volume III: mobile facilities. Montréal, 2005. (Doc. 9731)
Fonte3
ARAÚJO, João Richard Barcelos. Inglês técnico: técnicos em manutenção de aeronaves. [S.l]: [s.n.], [200-]. 100 p.
Contexto
The signal appears on the interrogating radar screen and gives the bearing and distance of the transponder from the interrogating radar for search and rescue purposes.
Subárea
Aeronautical Telecommunications
Related Term
radar display
radar surveillance
Narrower Term
precision-approach radar
primary radar
primary surveillance radar
secondary radar
secondary surveillance radar
Français
radar
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