System employs electronically randomized variant of quadraphase modulation and demodulation between two synchronized transceivers. System uses off-the-shelf components. It may be used with digital data, command signals, delta-modulated voice signals, digital television signals, or other data converted to digital form.
Secure communications system
NASA Tech Briefs ; 2 , 2
1977-09-01
Miscellaneous
No indication
English
British Library Conference Proceedings | 1998
|Secure Fiberoptic Communications
British Library Online Contents | 2003
|IEEE | 1998
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