System and Method for Stochastic Characterization of a Signal With Four Embedded Orthogonal Measurement Data Items
Patent, Filed 13 Sep 1996, patented 5 Oct 1999
DEPARTMENT OF THE NAVY WASHINGTON DC
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A signal processing system provides and processes a digital signal generated 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 hyper spatial 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.
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