Identification friend or foe - Wikipedia, the free encyclopedia
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In telecommunications, identification, friend or foe (IFF) is a cryptographic identification system designed for command and control. It is a system that enables military, and national (civilian-loc...
en.wikipedia.org/wiki/Identification_friend_or_foe
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Transponder (aviation) - Wikipedia, the free encyclopedia
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A transponder (short-for Trans mitter-res ponder and sometimes abbreviated to XPDR, XPNDR, TPDR or TP) is an electronic device that produces a response when it receives a radio-frequency interro...
en.wikipedia.org/wiki/Transponder_(aviation)
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Older E-3 AWACS IFF system received codes from aircraft that weren't always processed correctly. There was also a chance the codes could get garbled, which made it more difficult to identify the aircraft as friend or foe.
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www.globalsecurity.org/military/systems/aircraft/system...
www.globalsecurity.org/military/systems/aircraft/systems/iff.htm
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Bush's refusal to give Israel the US's Identify Friend or Foe (IFF) codes - the codes that aircraft broadcast to let allies know not to shoot them down - has long been one of the most obvious reasons that Israel could not get all the way to Iran.
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www.mererhetoric.com/archives/11274159.html
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The Identification-Friend-or-Foe System Using Variable Codes (hereinafter, the IFF System) is a simple yet highly accurate and reliable identification system that utilizes codes that are manually variable at pre-set intervals of time.
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www.freepatentsonline.com/5745575.html
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The circuit includes means for regenerating and removing noise from a reced pseudo-random IFF interrogation signal modulated onto a radar signal. The regenerated code is decoded ... Psuedorandom codes (PRC) have been used in the past because their randomness makes it difficult for an enemy to decipher and reproduce them.
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www.freepatentsonline.com/4074263.html
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Mode 3/A code allocation information ... SSR codes required for the prolonged use for traffic management or for discrete identification purposes are considered to be regular allocations. Application for regular allocation of an SSR code may take up to four months to be fully assessed, ... National IFF/SSR Committee...
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www.caa.co.uk/default.aspx?catid=1066&pagetype=90&pagei...
www.caa.co.uk/default.aspx?catid=1066&pagetype=90&pageid=6376
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archive.nlm.nih.gov/proj/dxpnet/nhanes/docs/doc/nhanes3...
archive.nlm.nih.gov/proj/dxpnet/nhanes/docs/doc/nhanes3/iff/IFF_id_codes.txt
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archive.nlm.nih.gov/proj/dxpnet/nhanes/docs/doc/nhanes3...
archive.nlm.nih.gov/proj/dxpnet/nhanes/docs/doc/nhanes3/iff/IFF_food_preparation_codes.txt
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