frequency jamming

См. также в других словарях:

• 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

• jamming — ▪ electronics       in electronics, broadcasting a strong signal that overrides or obscures a target signal. Jamming of radio and television stations broadcasting from beyond borders may be carried out by a country that does not wish its citizens …   Universalium

• Jamming — Jam Jam, v. t. [imp. & p. p. {Jammed} (j[a^]md); p. pr. & vb. n. {Jamming}.] [Either fr. jamb, as if squeezed between jambs, or more likely from the same source as champ See {Champ}.] [1913 Webster] 1. To press into a close or tight position; to… …   The Collaborative International Dictionary of English

• selective jamming — Jamming on a single frequency. Unlike a spot jammer, a number of frequencies can be selected, but only one frequency is jammed at a time …   Aviation dictionary

• Radar jamming and deception — is the intentional emission of radio frequency signals to interfere with the operation of a radar by saturating its receiver with noise or false information. There are two types of radar jamming: Mechanical and Electronic jamming . Mechanical… …   Wikipedia

• Radio jamming — is the (usually deliberate) transmission of radio signals that disrupt communications by decreasing the signal to noise ratio. Unintentional jamming occurs when an operator transmits on a busy frequency without checking that it is in use first,… …   Wikipedia

• IED jamming systems — Improvised explosive device (IED) or Remote Controlled Improvised Explosive Device (RCIED) jamming systems are electronics based radio frequency (RF) communication systems categorized as an electronic warfare (EW) countermeasure device designed… …   Wikipedia

• Barrage jamming — Barrage jamming: jamming accomplished by transmitting a band of frequencies that is large with respect to the bandwidth of a single emitter. Barrage jamming may be accomplished by presetting multiple jammers on adjacent frequencies, by using a… …   Wikipedia

• Digital radio frequency memory — (DRFM) is an electronic method for digitally capturing and retransmitting RF signal. DRFMs are typically used in radar jamming, although applications in cellular communications are becoming more common. Overview A DRFM system is designed to… …   Wikipedia

• Radio Frequency Identification — Die Neutralität dieses Artikels oder Abschnitts ist umstritten. Eine Begründung steht auf der Diskussionsseite. siehe: Abwahl Lesenswert Februar 2007 …   Deutsch Wikipedia

• selective jamming — noun electronic jamming of a specific channel or frequency • Syn: ↑spot jamming • Hypernyms: ↑jamming, ↑electronic jamming, ↑jam …   Useful english dictionary