Title :
GLRT detection of signals in reverberation
Author :
Carpenter, Robert N. ; Kay, Steven
Author_Institution :
Dept. of Electr. Eng., Rhode Island Univ., Kingston, RI, USA
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;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on
Conference_Location :
Detroit, MI
Print_ISBN :
0-7803-2431-5
DOI :
10.1109/ICASSP.1995.479547
