Quadratic estimators of the frequency-wavenumber spectrum

Author

Clark, Michael P. ; Scharf, Louis L. ; Mullis, C.T.

Author_Institution

Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA

fYear

1991

fDate

14-17 Apr 1991

Firstpage

2329

Abstract

A general representation is presented for quadratic estimators of the far-field frequency-wavenumber spectrum. The quadratic estimators are constructed from linear transformations of the array data. These linear transformations contain the windows normally associated with multiple window spectral estimators and act as multidimensional baseband beamformers. It is the selection of these windows that is most important in the design of quadratic spectral estimators. A discussion is presented of the two dimensional periodogram and the two dimensional Thomson (1982) estimator as prototypical examples of quadratic estimators

Keywords

spectral analysis; 2D Thomson estimator; array data; far field spectrum; frequency-wavenumber spectrum; linear transformations; multidimensional baseband beamformers; quadratic estimators; two dimensional periodogram; windows; Acoustic propagation; Baseband; Contracts; Dispersion; Frequency estimation; Parametric statistics; Probability; Prototypes; Sensor arrays; Sensor systems;

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.1991.150775

Filename

150775