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rotating antenna

См. также в других словарях:

  • Loop antenna — A shortwave loop antenna A loop antenna is a radio antenna consisting of a loop (or loops) of wire, tubing, or other electrical conductor with its ends connected to a balanced transmission line. Within this physical description there are two very …   Wikipedia

  • Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …   Wikipedia

  • Nauen Transmitter Station — Large adjustable antenna in Nauen, 2004 Nauen Transmitter Station (German: Grossfunkstelle Nauen or Sender Nauen) in Nauen, Havelland (Kreis), Brandenburg, Germany, is the oldest transmitting plant in the world. It was founded on 1 April 1906 by… …   Wikipedia

  • Radome — Radomes at the Misawa Security Operations Center, Misawa, Japan A radome (radar dome) is a structural, weatherproof enclosure that protects a microwave or radar antenna. The radome is constructed of material that minimally attenuates the… …   Wikipedia

  • Tactical Air Navigation — TACtical Air Navigation, or TACAN, is a navigation system used by military aircraft. It provides the user with a distance and bearing from a ground station. It is a more accurate version of the VHF omnidirectional range / Distance Measuring… …   Wikipedia

  • History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …   Wikipedia

  • Airborne early warning and control — AEW redirects here. For other uses, see AEW (disambiguation). For the airline, see Air Wisconsin. United States Air Force E 3 Sentry …   Wikipedia

  • Synthetic aperture radar — (SAR) is a form of radar in which the highly directional (and thus very large) rotating antenna used by conventional radar is replaced with many low directivity small stationary antenna positions scattered over some area near or around the target …   Wikipedia

  • Low-noise block converter — A low noise block converter (LNB, for low noise block, or sometimes LNC, for low noise converter) is the (receiving, or downlink) antenna of what is commonly called the parabolic (actually paraboloid) satellite dish commonly used for satellite TV …   Wikipedia

  • Chain Home — Radar Coverage 1939 1940 Chain Home was the codename for the ring of coastal Early Warning radar stations built by the British before and during the Second World War. The system otherwise known as AMES Type 1 (Air Ministry Experimental Station)… …   Wikipedia

  • US/Saudi AWACS Sale — The sale of AWACS (Airborne Warning and Control System) surveillance planes to Saudi Arabia by the United States administration of President Ronald Reagan was a controversial part of what was then the largest foreign arms sale in US history. (See …   Wikipedia

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