FIELD: communications engineering.
SUBSTANCE: proposed system that incorporates provision for double-frequency keying including pseudorandom operating frequency control has subscriber transmission stations and central receiving station; each subscriber transmitting station has clock generator, timer, data source, data signal shaper, coded signal shaper, double keying frequency signal shaper, modulator, transmitter, transmitting antenna, frequency synthesizer, and pseudorandom number generator; central receiving station has receiving antenna, demodulator, signal selector, additional sequence separating unit, double-channel matched filter, subtracter, data receiver, frequency synthesizer, pseudorandom number generator, and clock generator.
EFFECT: enlarged functional capabilities.
6 cl, 49 dwg
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