line-of-sight communication


line-of-sight communication
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English-Russian dictionary of telecommunications. 2015.

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  • Line-of-sight propagation — refers to electro magnetic radiation including light emissions traveling in a straight line. The rays or waves are diffracted, refracted, reflected, or absorbed by atmosphere and obstructions with material and generally cannot travel over the… …   Wikipedia

  • Non-line-of-sight propagation — Non line of sight (NLOS) or near line of sight is a term used to describe radio transmission across a path that is partially obstructed, usually by a physical object in the innermost Fresnel zone. Many types of radio transmissions depend, to… …   Wikipedia

  • Communication — For the term used in the game of bridge, see Glossary of contract bridge terms # communication. Communication is the activity of conveying meaningful information. Communication requires a sender, a message, and an intended recipient, although the …   Wikipedia

  • Aircraft Communication Addressing and Reporting System — Aircraft Communications Addressing and Reporting System (or ACARS) is a digital datalink system for transmission of small messages between aircraft and ground stations via radio or satellite. The protocol, which was designed by ARINC to replace… …   Wikipedia

  • Optical communication — is any form of telecommunication that uses light as the transmission medium. An optical communication system consists of a transmitter, which encodes a message into an optical signal, a channel, which carries the signal to its destination, and a… …   Wikipedia

  • satellite communication — Introduction  in telecommunication, the use of artificial satellites to provide communications links between various points on Earth (Earth satellite). Communications satellites relay voice, video, and data signals between widely separated fixed… …   Universalium

  • long-range communication system — A communication system that uses satellite relay, data link, high frequency, or another approved communication system that extends beyond the line of sight …   Aviation dictionary

  • Semaphore line — This article is about the communication system using towers with pivoting shutters. For other uses, see Semaphore (disambiguation). For the now closed railway in Adelaide, Australia, see Semaphore railway line, Adelaide. A Chappe telegraph at… …   Wikipedia

  • Main South Line — This article is about the railway in New Zealand. For the railway in NSW, Australia, see Main Southern railway line, New South Wales. Main South Line Main South Line and shunting yards at Dunedin. Ov …   Wikipedia

  • very high frequency — The range of radio frequencies between 30 and 300 MHz. Portions of this band, 108 to 118 MHz, are used for certain NAVAIDs (navigational aids); 118 to 136 MHz are used for civil air to ground voice communications. Other frequencies in this band… …   Aviation dictionary

  • Venus Equilateral — The Venus Equilateral series is a set of 13 science fiction short stories by George O. Smith, concerning the Venus Equilateral Relay Station, an interplanetary communications hub located at the L4 Lagrangian point of the Sun Venus system. Most of …   Wikipedia

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