In telecommunications, identification, friend or foe (IFF) is a crypto identification system designed for command and control. A system that enables military, and national (civilian located ATC) interrogation systems to distinguish friendly aircraft, vehicles, or forces, and to determine their bearing and range from the interrogator.
Transponder Anomalous propagation Automatic Target Recognition Electric beacon Department of Defense Dictionary of Military and Associated Terms Challenge-response authentication Secondary surveillance radar Transponder (aviation) Fratricide Azimuth Friendly fire Federal Standard 1037C System Cryptography Radar Telecommunication World War II United States
