Sources identification in unknown Gaussian coloured noise with composite HNL statistics

Author

Scarano, G. ; Jacovitti, G.

Author_Institution

CNR, Istituto di Acustica ´´O.M. Corbino´´, Rome, Italy

fYear

1991

fDate

14-17 Apr 1991

Firstpage

3465

Abstract

The extension of higher order moments based spectral analysis to hybrid nonlinear (HNL) moments is theoretically discussed. It is shown that the structure of the covariance matrix of harmonic processes is retained by HNL moments matrices, thus allowing the use of eigenassisted estimation procedures. The Gaussian components insensitivity of slice cumulants is generalized to a subclass of HNL moments, and a covariance subtraction method for blind rejection of colored noise is proposed. Simulation results confirm the applicability of such a procedure for bearings estimation in array processing schemes

Keywords

eigenvalues and eigenfunctions; identification; matrix algebra; random noise; spectral analysis; statistics; Gaussian coloured noise; Gaussian components insensitivity; HNL statistics; array processing; bearings estimation; blind rejection; covariance matrix; covariance subtraction method; eigenassisted estimation; harmonic processes; hybrid nonlinear moments; noise rejection; simulation results; slice cumulants; sources identification; spectral analysis; Array signal processing; Colored noise; Covariance matrix; Gaussian noise; Harmonic analysis; Higher order statistics; Noise measurement; Sensor arrays; Spectral analysis; Statistical analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on

Conference_Location

Toronto, Ont.

ISSN

1520-6149

Print_ISBN

0-7803-0003-3

Type

conf

DOI

10.1109/ICASSP.1991.150200

Filename

150200