释义 |
identification, friend or foe [ī´dent·ǝ·fǝ`kā·shǝn `frend ǝr `fō] ENGINEERING A system using pulsed radio transmissions to which equipment carried by friendly forces automatically responds, by emitting a pulse code, thereby identifying themselves from enemy forces; a method of determining the friendly or unfriendly character of aircraft, ships, and army units by other aircraft, ships, or ground force units. Abbreviated IFF. |