Method of Increasing the Identification Friend or Foe Systems Information Security

This article proposes a method of improving information security Identification Friend or Foe (IFF) systems. In this method, a successive transition is made from servicing a separate IFF requester with a system to servicing a network of interrogators of IFF systems that monitor this air object (AO) due to: forming on the aircraft responder the analysis time interval, allocating request signals at this time interval and, when allocating at least one request signal at the time analysis interval, at the end of the analysis time interval, emitting a response signal which includes the spatial coordinates of the AO. This made it possible to exclude the possibility of paralyzing the aircraft responder by deliberate correlated interference of the required intensity by the interested party and, as a result, eliminating the possibility of distortion the detected AO state affiliation information, which increased the information security of the IFF systems.