- radio signal attenuation
- ослабление радиосигнала
English-Russian glossary on space technology. 2015.
radio signal attenuation
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Radio propagation — is a term used to explain how radio waves behave when they are transmitted, or are propagated from one point on the Earth to another. [ H. P. Westman et al, (ed), Reference Data for Radio Engineers, Fifth Edition , 1968, Howard W. Sams and Co.,… … Wikipedia
Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… … Wikipedia
Signal reflection — occurs when a signal is transmitted along a transmission medium, such as a copper cable or an optical fiber, some of the signal power may be reflected back to its origin rather than being carried all the way along the cable to the far end. This… … Wikipedia
Signal strength — In telecommunications, particularly in radio, signal strength refers to the magnitude of the electric field at a reference point that is a significant distance from the transmitting antenna. It may also be referred to as received signal level or… … Wikipedia
Attenuation — This article is about attenuation in physics. For other uses, see Attenuation (disambiguation). In physics, attenuation (in some contexts also called extinction) is the gradual loss in intensity of any kind of flux through a medium. For instance … Wikipedia
Radio Fréquence — Onde radio Une onde radioélectrique (dite onde radio) est une onde électromagnétique dont la fréquence est inférieure à 3 000 GHz, soit une longueur d onde supérieure à 0,1 mm. Sommaire 1 Définition et réglementation 2 Spectre… … Wikipédia en Français
Radio fréquence — Onde radio Une onde radioélectrique (dite onde radio) est une onde électromagnétique dont la fréquence est inférieure à 3 000 GHz, soit une longueur d onde supérieure à 0,1 mm. Sommaire 1 Définition et réglementation 2 Spectre… … Wikipédia en Français
Radio acoustic sounding system — A radio acoustic sounding system (RASS) is a system for measuring the atmospheric lapse rate using backscattering of radio waves from an acoustic wave front to measure the speed of sound at various heights above the ground. This is possible… … Wikipedia
Radio atmospheric — A Radio Atmospheric signal or Sferic (sometimes also spelled Spheric ) is a broadband electromagnetic impulse that occurs as a result of natural atmospheric lightning discharges. Sferics may propagate from their lightning source without major… … Wikipedia
Shortwave radio — Shortwave can also refer to a shortwave trough meteorology. A solid state, analog shortwave receiver Shortwave radio refers to the upper MF (medium frequency) and all of the HF (high frequency) portion of the radio spectrum, between… … Wikipedia
Propagation des ondes radio — Les ondes radioélectriques ou ondes hertziennes sont des ondes électromagnétiques qui se propagent de deux façons : dans l espace libre (propagation rayonnée, autour de la Terre par exemple) dans des lignes (propagation guidée, dans un câble … Wikipédia en Français
