Multichannel Moment Detectors for Transients in Shallow-Water Noise

Pflug, Lisa A.; Ioup, George E.; Ioup, Juliette W.

doi:10.1109/joe.2003.822976

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2005

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Cited by 5 publications

(2 citation statements)

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“…In the current study, only the problem of transient classification is addressed; it is assumed that transients are detected and endpointed by another process (for example, see [25]). Accordingly, the start and end points of transient events were identified manually, and short and long contexts were isolated.…”

Section: Discussionmentioning

confidence: 99%

Classification of Transient Sonar Sounds Using Perceptually Motivated Features

Tucker

Brown

2005

IEEE J. Oceanic Eng.

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Section: Discussionmentioning

confidence: 99%

Classification of Transient Sonar Sounds Using Perceptually Motivated Features

Tucker

Brown

2005

IEEE J. Oceanic Eng.

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“…In the absence of a transient the distribution of the transform coefficients is spread. Other methods applicable to the detection of underwater acoustic transients involve using higher-order spectra of the received data to compute the detection statistics ͑Walsh and Delaney, 1995; Pflug et al, 2004 and techniques based on nonlinear processing of data ͑Zakarauskas et al, 1991͒.…”

Section: Introductionmentioning

confidence: 99%

Adaptive window-length detection of underwater transients using wavelets

Carević

2005

The Journal of the Acoustical Society of America

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This paper describes a detection method that adapts to unknown characteristics of the underlying transient signal, such as location, length, and time-frequency content. It applies a set of embedded detectors tuned to a number of signal partitions. The detectors are based on the wavelet theory, whereby two different techniques are examined, one using local Fourier transform and the other using discrete wavelet transform. The detection statistics are computed so as to enable prewhitening of unknown colored noise and to allow for a constant false-alarm rate detection. An adapted segmentation of the signal is next obtained with a goal of finding the largest detection statistics within each segment of the partition. The detectors are tested using several underwater acoustic transient signals buried in ambient sea noise.

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