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Time-Frequency Analysis of Broadband Acoustic Scattering from Chub Mackerel Scomber japonicus, Goldeye Rockfish Sebastes thompsoni, and Fat Greenling Hexagrammos otakii
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 Title & Authors
Time-Frequency Analysis of Broadband Acoustic Scattering from Chub Mackerel Scomber japonicus, Goldeye Rockfish Sebastes thompsoni, and Fat Greenling Hexagrammos otakii
Lee, Dae-Jae;
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Broadband echoes measured in live chub mackerel Scomber japonicus, goldeye rockfish Sebastes thompsoni, and fat greenling Hexagrammos otakii with different morphologies and internal characteristics were analyzed in time and frequency domains to understand the species-specific echo feature characteristics for classifying fish species. The mean echo image for each time-frequency representation dataset obtained as a function of orientation angle was extracted to mitigate the effect of fish orientation on acoustic scattering. The joint time-frequency content of the broadband echo signals was obtained using the smoothed pseudo-Wigner-Ville distribution (SPWVD). The SPWVDs were analyzed for each echo signature of the three fish species. The results show that the time-frequency analysis provided species-specific echo structure patterns and metrics of the broadband acoustic signals to facilitate fish species classification.
Time-frequency analysis;Spectrogram;SPWVD;Broadband acoustic scattering;Echo signature;
 Cited by
Acoustic Identification of Six Fish Species using an Artificial Neural Network, Korean Journal of Fisheries and Aquatic Sciences, 2016, 49, 2, 224  crossref(new windwow)
Time-Frequency Feature Extraction of Broadband Echo Signals from Individual Live Fish for Species Identification, Korean Journal of Fisheries and Aquatic Sciences, 2016, 49, 2, 214  crossref(new windwow)
Age and Growth of the Goldeyes Rockfish Sebasetes thompsoni in the Ulleungdo and Dokdo Areas, Korean Journal of Fisheries and Aquatic Sciences, 2015, 48, 6, 929  crossref(new windwow)
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