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Matched field detection by active sonar
'Challenges of Our Changing Global Environment'. Conference Proceedings. OCEANS '95 MTS/IEEE, 2002The problems of underwater acoustic detection by active sonar are studied. Using a generalized likelihood ratio test, a background reverberation-adaptive detector for targets is derived. The algorithm provides constant false alarm rate performance in locally stationary Gaussian reverberation environments.
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Low frequency continuous active sonar
2011Existing sonar systems are commonly deployed at a low duty cycle, i.e. a short transmit signal is used followed by a long listening time. As a result, the target is only illuminated during a short time resulting in only one detection opportunity per ping.
Vossen, R. van +2 more
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Array Modeling of Active Sonar Clutter
OCEANS 2007, 2007Active sonar systems operating in shallow-water environments often deal with excessive false alarms, generically referred to as clutter, that are more numerous than expected for Rayleigh-distributed reverberation. The clutter probability density function, and therefore the probability of false alarm (P fa), depends on the scattering sources ...
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4933914 Channel adaptive active sonar
Deep Sea Research Part B. Oceanographic Literature Review, 1990Paul L Feintuch, Francis A Reed
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Whales, Submarines, and Active Sonar
Ocean Yearbook Online, 2004Jon M. Van Dyke +2 more
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Integrated waveform for continuous active sonar detection and communication
IET Radar, Sonar and Navigation, 2020Jingwei Yin, Xiao Han
exaly