Stable data adaptive methods for matched field array processing in acoustic waveguides

Author

Byrne, C. ; Brent, R. ; Feuillade, C. ; Del Balzo, D.

Author_Institution

Dept. of Math., Lowell Univ., MA, USA

fYear

1988

fDate

3-5 Aug 1988

Firstpage

111

Lastpage

116

Abstract

The authors investigate the destabilization of J. Capon´s (Proc. IEEE, vol.87, p.1408, 1969) maximum likelihood estimator caused by the presence of correlated noise due to the excitation, by ambient noise sources, of normal mode (or local normal mode) structure in an acoustic waveguide. They develop an estimator-reduced maximum likelihood method that avoids the instability and presents the results of several simulations to illustrate the differences between the two methods. The results apply to any acoustic environment in which both signal and noise vectors are projected onto a subspace of lower dimension

Keywords

acoustic signal processing; acoustic waveguides; estimation theory; noise; acoustic environment; acoustic waveguides; ambient noise sources; correlated noise; estimator-reduced maximum likelihood method; instability; local normal mode; matched field array processing; maximum likelihood estimator; noise vectors; signal vectors; stable data adaptive method; Acoustic noise; Acoustic propagation; Acoustic sensors; Acoustic waveguides; Acoustic waves; Array signal processing; Gaussian noise; Maximum likelihood estimation; Sensor arrays; Transmission line matrix methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Spectrum Estimation and Modeling, 1988., Fourth Annual ASSP Workshop on

Conference_Location

Minneapolis, MN

Type

conf

DOI

10.1109/SPECT.1988.206174

Filename

206174