INFORMATION EXCHANGE PROTECTION METHOD FOR LOCAL RADIO COMMUNICATION SYSTEM Russian patent published in 1998 - IPC

FIELD: radio communications; radio communication systems using jamming in their operation; local radio communication systems for secret data exchange in ultrashort-wave, microwave, and shorter-wave bands. SUBSTANCE: method depends on reduction of signal-to-noise ratio for receivers responding to attempt of unauthorized access to data transmitted. For reliable protection from possible abnormal situations, signal-to-noise ratio lower than unity is ensured due to the fact that in the course of operation of radio communication system, jamming signals whose power is much higher than that of useful signals in system are continuously emitted beyond system perimeter and upward and cover entire frequency band used in system. EFFECT: improved reliability of radio communication system protection. 4 dwg