Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1987-05-07
1988-08-16
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
047649828
ABSTRACT:
A secure communication system uses narrow beam laser transmissions from a relay station high above the surface of the earth and another station which may be a submerged submarine. Position reporting by a laser transmission from the other station or submarine to the relay station provides for acquisition, tracking and data transmission between the stations. For strategic use transmissions to the submarine for one way data transmission is achieved by radio relay to the relay station and laser down link transmission to the submarine. Transponding mode operation is provided for a two-way transmission data link.
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Buczinski Stephen C.
Pfund Charles E.
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