Pulse or digital communications – Testing – Signal noise
Patent
1996-09-13
1999-10-05
Tse, Young T.
Pulse or digital communications
Testing
Signal noise
375346, 370208, H04B 346
Patent
active
059635916
ABSTRACT:
A signal processing system provides and processes a digital signal, generd in response to an analog signal, which includes a noise component and possibly also an information component representing four mutually orthogonal items of measurement information representable as a sample point in a symbolic four-dimensional hyperspatial reference system. An information processing and decision sub-system receives said digital signal and processes it to extract the information component. A noise likelihood determination sub-system receives the digital signal and generates a random noise assessment of whether or not the digital signal comprises solely random noise, and if not, generates an assessment of degree-of-randomness. The noise likelihood determination system controls whether or not the information processing and decision sub-system is used, in response to one or both of these generated outputs. One prospective practical application of the invention is the performance of a triage function upon signals from sonar receivers aboard naval submarines, to determine suitability of the signal for feeding to a subsequent contact localization and motion analysis (CLMA) stage.
REFERENCES:
patent: 3831039 (1974-08-01), Henschel
patent: 4063180 (1977-12-01), Norman
patent: 5327242 (1994-07-01), Naimpally et al.
patent: 5675553 (1997-10-01), O'Brien, Jr. et al.
Nguyen Chung T.
O'Brien, Jr. Francis J.
Lall Prithvi C.
McGowan Michael J.
Oglo Michael F.
The United States of America as represented by the Secretary of
Tse Young T.
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