under-frequency

under-frequency
пониженная частота

Англо-русский словарь по авиации. 2013.

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  • Frequency-hopping spread spectrum — (FHSS) is a method of transmitting radio signals by rapidly switching a carrier among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver. A spread spectrum transmission offers three main advantages over… …   Wikipedia

  • Frequency coordination — is a technical and regulatory process which is intended to remove or mitigate radio frequency interference between different radio systems which utilise the same operational frequency.Normally frequency coordination is undertaken by… …   Wikipedia

  • Frequency (producer) — Frequency Background information Birth name Bryan Fryzel Born January 4, 1983 …   Wikipedia

  • Frequency-dependent selection — is the term given to an evolutionary process where the fitness of a phenotype is dependent on its frequency relative to other phenotypes in a given population. In positive frequency dependent selection (or purifying frequency dependent selection) …   Wikipedia

  • Frequency dependent selection — is the term given to an evolutionary process where the fitness of a phenotype is dependent on its frequency relative to other phenotypes in a given population. In positive frequency dependent selection, the fitness of a phenotype increases as it… …   Wikipedia

  • Frequency-division multiplexing — (FDM) is a form of signal multiplexing where multiple baseband signals are modulated on different frequency carrier waves and added together to create a composite signal. Non telephoneFDM can also be used to combine multiple signals before final… …   Wikipedia

  • Frequency Of Exclusion — refers to the rate of occurrences where a group is excluded from a sample or study. The frequency of exclusion would attempt to define the percentage or rate that a specified group is under represented in a sample or study. Statistical study… …   Investment dictionary

  • Frequency modulation — See also: Amplitude modulation In telecommunications, frequency modulation (FM) conveys information over a carrier wave by varying its frequency (contrast this with amplitude modulation, in which the amplitude of the carrier is varied while its… …   Wikipedia

  • frequency assignment — noun a) An authorization, given by an administration, for a radio station to use a radio frequency or radio frequency channel under specified conditions. b) The process of authorizing a specific frequency, group of frequencies, or frequency …   Wiktionary

  • frequency meter — ▪ measurement device       device for measuring the repetitions per unit of time (customarily, a second) of a complete electromagnetic waveform. Various types of frequency meters are used. Many are instruments of the deflection type, ordinarily… …   Universalium

  • Under Attack — Infobox Single Name = Under Attack Artist = ABBA from Album = B side= You Owe Me One Released = December 3 1982 in UK, February 21, 1983 Format = 7 single [ Recorded = ] Genre = Synthpop Length = 3:46 Label = Polar Music, Epic, Atlantic Writer =… …   Wikipedia


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