GLRT detection of signals in reverberation

Author

Carpenter, Robert N. ; Kay, Steven

Author_Institution

Dept. of Electr. Eng., Rhode Island Univ., Kingston, RI, USA

Volume

5

fYear

1995

fDate

9-12 May 1995

Firstpage

3127

Abstract

A common problem in active sonar is that of multipath propagation in the ocean environment. A generalized likelihood ratio test (GLRT) approach is developed for detecting multiple target returns with unknown time delays and amplitudes in reverberation. The reverberation is modeled by a scattering function that is assumed to be described by the power spectral density of a complex autoregressive process. The generalized likelihood ratio test detector is described and its performance is compared to the clairvoyant optimal processor and an ad hoc processor

Keywords

autoregressive processes; delays; maximum likelihood detection; multipath channels; reverberation; signal detection; sonar signal processing; spectral analysis; underwater sound; GLRT detection; active sonar; amplitudes; autoregressive process; clairvoyant optimal processor; generalized likelihood ratio test; generalized likelihood ratio test detector; multipath propagation; multiple target returns detection; ocean environment; performance; power spectral density; reverberation; scattering function; signal detection; time delays; Autoregressive processes; Convolution; Delay effects; Filters; Oceans; Reverberation; Scattering; Signal detection; Sonar; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on

Conference_Location

Detroit, MI

ISSN

1520-6149

Print_ISBN

0-7803-2431-5

Type

conf

DOI

10.1109/ICASSP.1995.479547

Filename

479547