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Secret-signalling system utilizing noise communication
Secret-signalling system utilizing noise communication
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机译:利用噪声通信的秘密信号系统
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摘要
A secret-signaling, transmitted-reference, spread-spectrum system, utilizing a suppressed-noise carrier for the information signal in combination with a delayed-noise, suppressed carrier of a fixed frequency in order to spectrum-spread the voice signal across the noise signal in the same frequency band. The receiver of the system delays the transmitted signal input which is taken together with the undelayed transmitted signal to determine correlation in order to extract, from the transmitted spread-spectrum signal, solely the information signal generated.
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