FIELD: fiber-optics systems of transmission of confidential information.
SUBSTANCE: an information signal, masking synchronizing signal, and a standardized inverse masking synchronizing signal are formed on the transmitting side, the transmitted information signal is formed by multiplication of the initial information signal and the standardized inverse masking synchronizing signals, the masking synchronizing signal and the transmitted information signal are mixed, the transmitted optical radiation is modulated by the summary signal, brought in the fiber-optics communication line, and on the receiving side the received optical radiation is brought out of the fiber-optics communication line.
EFFECT: compensated masking synchronizing signal within the received optical radiation, which enhances the signal-to-interference ratio for the separated information signal.
2 dwg
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|---|---|---|---|
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|
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| METHOD FOR MASKING OF ACOUSTIC COMMUNICATION LINES | 1998 |
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