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Analysis and Classification of Broadband Acoustic Echoes from Individual Live Fish using the Pulse Compression Technique
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 Title & Authors
Analysis and Classification of Broadband Acoustic Echoes from Individual Live Fish using the Pulse Compression Technique
Lee, Dae-Jae; Kang, Hee-Young; Kwak, Min Son;
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This study identified the species-specific, frequency-dependent characteristics of broadband acoustic scattering that facilitate classifying fish species using the pulse compression (PC) technique. Controlled acoustic scattering laboratory experiments were conducted with nine commercially important fish species using linear chirp signals (95-220 kHz) over an orientation angle range of in the dorsal plane at approximately increments. The results suggest that the angular-dependent characteristics of the broadband echoes and the frequency-dependent variability in target strength (TS) were useful for inferring the fish species of interest. The scattering patterns in the compressed pulse output were extremely complex due to morphological differences among fish species, but the x-ray images strongly suggested that spatial separation correlated well with scattering for the head, skeleton, bone, otoliths, and swim bladder within each specimen.
Broadband acoustic scattering;Frequency dependence;Pulse compression technique;Fish species classification;Chirp fishfinder;
 Cited by
고등어(Scomber japonicus), 불볼락(Sebastes thompsoni) 및 쥐노래미(Hexagrammos otakii)에 의한 광대역 음향산란신호의 시간-주파수 분석,이대재;

한국수산과학회지, 2015. vol.48. 2, pp.221-232 crossref(new window)
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활어 개체어의 광대역 음향산란신호로부터 어종식별을 위한 시간-주파수 특징 추출,이대재;강희영;박용예;

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