Communications – electrical: acoustic wave systems and devices – Underwater system – Telemetering
Patent
1996-10-31
1998-03-31
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Underwater system
Telemetering
367106, H04B 1100
Patent
active
057346240
ABSTRACT:
The present invention comprises a wide-band omni telemetry system adapted r increasing the signal transmission bandwidth of an existing tactical array having a single shared transmission line. In accordance with one embodiment of the invention electronic elements are provided for conditioning and converting a wide-band analog data signal, received from an underwater acoustic sensing device, to an appropriate wide-band digital signal. Timing elements provide a carrier wave signal interface with telemetry elements for modulating the carrier wave signal with the wide-band digital signal wherein the carrier wave is quadrature phase shift key modulated. In this way two separate carrier waves are created that are shifted in phase by about 90.degree. relative to one another. Coupling elements are employed to couple the two carrier waves to the tactical array wherein at least two diplexors interface with the carrier waves so as to couple the wide-band digital signal with a plurality of acoustic and environmental data gathered by the tactical array. The coupled carrier waves are then transmitted over the single shared transmission line. Command decoding elements provide a communication link to the tactical array so as to synchronize generation of the wide-band analog data signal by the underwater acoustic sensing device with the operation of the telemetry elements.
REFERENCES:
patent: 4187493 (1980-02-01), Patterson
patent: 4737968 (1988-04-01), Norton et al.
patent: 4868795 (1989-09-01), McDavid et al.
patent: 5301167 (1994-04-01), Proakis et al.
patent: 5450369 (1995-09-01), Mastin et al.
Gannon James M.
Schmidt Robert D.
Striffler Foster L.
Lall Prithvi C.
McGowan Michael J.
Oglo Michael F.
Pihulic Daniel T.
The United States of America as represented by the Secretary of
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