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IEEE JOURNAL OF OCEANIC ENGINEERING, VOL. 27, NO. 3, JULY 2002 619 A Study of Effects of Sonar Bandwidth for
 

Summary: IEEE JOURNAL OF OCEANIC ENGINEERING, VOL. 27, NO. 3, JULY 2002 619
A Study of Effects of Sonar Bandwidth for
Underwater Target Classification
De Yao, Mahmood R. Azimi-Sadjadi, Senior Member, IEEE, Arta A. Jamshidi, and Gerald J. Dobeck
Abstract--The problem of classifying underwater targets
is addressed in this paper. The proposed classification system
consists of several subsystems including preprocessing, subband
decomposition using wavelet packets, linear predictive coding,
feature selection and neural network classifier. A multi-aspect
fusion system is introduced to further improve the classification
accuracy. The classification performance of the overall system
is demonstrated and benchmarked on two different acoustic
backscattered data sets with 40- and 80-kHz bandwidth. A com-
prehensive study is then carried out to compare the classification
performance using these data sets in terms of the receiver oper-
ating curves, error locations, and generalization and robustness
on a large set of noisy data. Additionally, the importance of
different frequency bands for the wideband 80-kHz data is also
investigated. For the wideband data, a subband fusion mechanism
is introduced which offers very promising results.

  

Source: Azimi-Sadjadi, Mahmood R. - Department of Electrical and Computer Engineering, Colorado State University

 

Collections: Computer Technologies and Information Sciences