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Identification Friend or Foe (IFF) & Secondary Surveillance Radar Explained | Fundamentals of EW

The US military uses IFF to tell friends apart from enemies, and civilian aviation uses SSR to keep track of planes in crowded airspace. But did you know these two seemingly different systems use the exact same technology? In this video we'll go into how that tech works and how its used both in civil and military applications. Intro 00:00 Bits and Pulses 04:48 Mode 3/A 07:00 Mode 4 10:50 Modes S and 5 13:07 Radar playlist:    • Radar Explained   References: Overview of SSR and IFF: https://ieee.li/pdf/viewgraphs/overvi... DoD paper on Mode 5 IFF: https://www.dote.osd.mil/Portals/97/p... Article on modern IFF systes: https://euro-sd.com/2022/01/articles/... Image of GA Transponder: By Meggar at the English-language Wikipedia, CC BY-SA 3.0, https://commons.wikimedia.org/w/index... Obligatory disclaimers: The presence of DOD Visual Information in this video does not constitute endorsement by the DOD or any of its departments. Any views expressed by the presenter are those of the presenter and do not represent the views of the DOD or any of its components.