Improved Data Analysis System.
Patent, Filed 25 Mar 70, patented 28 Jun 88,
DEPARTMENT OF THE NAVY WASHINGTON DC
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A data analysis system accepts time related data samples which are developed from sets of common wavefronts incident upon a plurality of sensors. The data samples are converted from analog-to-digital form and the Fourier transforms relative to the frequency components are generated. The frequency components of the Fourier transforms are in turn cross-correlated for developing matrices of all possible correlations for each frequency component and then the matrices are integrated over a determinable time period. The resultant integrated matrices are compared with signals representative of an incident plane wave power as a function of its angles of arrival at a sensor array and of its frequency, producing output signals of relative strength indicative of the direction of the origin of the data samples. Keywords Patents, Sonar, Hydrophones. KR
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