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38 IEEE JOURNAL OF OCEANIC ENGINEERING, VOL. 36, NO. 1, JANUARY 2011 Coherence-Based Underwater Target Detection From
 

Summary: 38 IEEE JOURNAL OF OCEANIC ENGINEERING, VOL. 36, NO. 1, JANUARY 2011
Coherence-Based Underwater Target Detection From
Multiple Disparate Sonar Platforms
J. Derek Tucker, Student Member, IEEE, and Mahmood R. Azimi-Sadjadi, Senior Member, IEEE
Abstract--This paper explores the use of multichannel coher-
ence as a tool for detection of underwater targets from imagery
captured from multiple disparate sonar systems. The use of
multiple disparate sonars allows one to exploit a high-resolution
sonar with good target definition while taking advantage of the
clutter suppression abilities of a low-resolution broadband (BB)
sonar coregistered over the same region to provide much better
detection performance comparing to those of the single-sonar
cases. In this paper, the standard Neyman­Pearson detector is
extended to the dual disparate sonar case allowing target detection
across two sensory channels simultaneously. A novel distributed
detection system is also developed that exploits the use of multiple
dual-sonar detectors for multiplatform target detection. Test
results of the proposed detection methods are also presented on
an underwater synthetic aperture sonar (SAS) imagery database
containing data from three different imaging sonars operating at

  

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

 

Collections: Computer Technologies and Information Sciences