Accession Number:

ADD019982

Title:

System and Method for Stochastic Characterization of Sparse, Four-Dimensional, Underwater-Sound Signals

Descriptive Note:

Patent Application, Filed 22 Aug 2001

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

2001-08-22

Pagination or Media Count:

24.0

Abstract:

A signal processing system provides and processes a digital signal, converted from to an analog signal, which includes a noise component and possibly also an information component comprising small samples representing four mutually orthogonal items of measurement information representable as a sample point in a symbolic Cartesian four-dimensional spatial reference system. An information processing 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 information processing system is illustrated as combat control equipment for undersea warfare, which utilizes a sonar signal produced by a towed linear transducer array, and whose mode operation employs four mutually orthogonal items of measurement information.

Subject Categories:

  • Miscellaneous Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE