Accession Number : AD0704559

Title :   AN ALGORITHM FOR ESTIMATION OF THE INVERSE SPECTRAL MATRIX,

Corporate Author : GENERAL DYNAMICS SAN DIEGO CALIF ELECTRIC BOAT DIV

Personal Author(s) : Knapp,Charles H.

Report Date : 20 FEB 1970

Pagination or Media Count : 34

Abstract : An algorithm is presented for estimation of the inverse spectral matrix, and the selection of parameters in the algorithm is discussed. The significance of the spectral matrix is presented by outlining its application to optimal filtering in multi-element arrays. The algorithm requires fast Fourier transformation of a vector time function over successive time intervals. The inverse spectral matrix is updated after each interval using a simple difference equation. Computational evaluation of the algorithm is not reported. (Author)

Descriptors :   (*UNDERWATER SOUND, DETECTION), (*INFORMATION THEORY, MATRICES(MATHEMATICS)), SONAR ARRAYS, HYDROPHONES, FOURIER ANALYSIS, INTEGRAL TRANSFORMS, POWER SPECTRA, ALGORITHMS

Subject Categories : Cybernetics
      Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE