HIGH-AUTHENTICATION RADIO COMMUNICATION SYSTEM Russian patent published in 1997 - IPC

FIELD: space and ground radio communication lines with frequency reuse provision. SUBSTANCE: system has angle modulator 1, power splitter 2, amplitude modulators 3, 4, phase-inverting amplifier 5, transmitting antenna feeds 6, 7, transmitting antenna 8, sum-difference unit 12, adder 13, subtracter 14, synchronous detector 15, amplitude limiter 16, demodulator 17, low-frequency filters 18, 23, control unit 19 for positioning polarization axes of transmitting antenna feeds, clock generator 20, pseudorandom sequence generator 21, delay line 22, threshold shaper 24, and comparison circuit 25. EFFECT: improved authentication of radio communication system. 3 dwg