Accession Number : ADD013830

Title :   Improved Data Analysis System.

Descriptive Note : Patent, Filed 25 Mar 70, patented 28 Jun 88,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Edelblute, David J ; Kinnison, Gerald L

Report Date : 28 Jun 1988

Pagination or Media Count : 15

Abstract : 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)

Descriptors :   *DATA PROCESSING, *ACOUSTIC DATA, *ACOUSTIC SIGNALS, ANGLE OF ARRIVAL, ARRAYS, DETECTORS, FOURIER TRANSFORMATION, FREQUENCY, HYDROPHONES, OUTPUT, PATENTS, PLANE WAVES, POWER, SAMPLING, SIGNALS, SONAR, STRENGTH(GENERAL), WAVEFRONTS

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE