Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1981-03-27
1987-05-12
Buczinski, Stephen C.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
250203R, 356152, 455601, 455609, G02F 100, G01B 1126, G01J 120
Patent
active
046645187
ABSTRACT:
A secure communication system uses narrow beam laser transmissions between an orbiting satellite and another station which may be a submerged submarine. Position reporting by a laser transmission from the submarine to the satellite provides for tracking and data transmission between the stations. For strategic use tracking of the submarine for one way data transmission is achieved from a single laser transmission from the submarine while transporting mode operation is provided for a two-way transmission data link.
REFERENCES:
patent: 2494645 (1950-01-01), Collins
patent: 2982859 (1961-05-01), Steinbrecher
patent: 3060425 (1962-10-01), Cutler
patent: 3095538 (1963-06-01), Silberstein
Buczinski Stephen C.
Pfund Charles E.
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