어류 부레의 형태학적 차이에 따른 음향산란강도의 자세 및 주파수 의존성의 변화
Changes in the Orientation and Frequency Dependence of Target Strength due to Morphological Differences in the Fish Swim Bladder
0
조회
0
다운로드
9
인용
0
참고문헌
키워드
초록
Controlled broadband acoustic scattering laboratory experiments were conducted using a linear chirp signal (95–220 kHz), and x-ray images of live and model fish with an artificial swim bladder were analyzed to investigate the changes in orientation and frequency dependence of target strength (TS) due to morphological differences in fish swim bladders. The broadband echoes from live and model fish were measured over an orientation angle range of ± 45° in the dorsal plane and in approximately 1° increments. The location of nulls in the simulated echo response of the SINC [sinc function] model was overlaid on the TS map, showing the orientation and frequency dependence of fish TS, and they matched very well. It was possible to infer the equivalent fish scattering size (or swim bladder) using the null spacing in the experimentally obtained broadband TS map. Good agreement was observed for inferring the equivalent scattering size between the SINC model and the broadband echoes measured for the three fish species (black scraper Thamnaconus modestus; goldeye rockfish Sebastes thompsoni; and whitesaddled reef fish Chromis notatus). Some results of this inference are discussed.
Abstract
Controlled broadband acoustic scattering laboratory experiments were conducted using a linear chirp signal (95–220 kHz), and x-ray images of live and model fish with an artificial swim bladder were analyzed to investigate the changes in orientation and frequency dependence of target strength (TS) due to morphological differences in fish swim bladders. The broadband echoes from live and model fish were measured over an orientation angle range of ± 45° in the dorsal plane and in approximately 1° increments. The location of nulls in the simulated echo response of the SINC [sinc function] model was overlaid on the TS map, showing the orientation and frequency dependence of fish TS, and they matched very well. It was possible to infer the equivalent fish scattering size (or swim bladder) using the null spacing in the experimentally obtained broadband TS map. Good agreement was observed for inferring the equivalent scattering size between the SINC model and the broadband echoes measured for the three fish species (black scraper Thamnaconus modestus; goldeye rockfish Sebastes thompsoni; and whitesaddled reef fish Chromis notatus). Some results of this inference are discussed.
참고문헌 (16)
- Clay CS, "Acoustic models of fish : The Atlantic cod(Gadus morhua)", J Acoust Soc Am, 96, pp.1161~1668 (1994)
- Fassler SMM, "A Bayesian approach to estimating target strength", ICES J Mar Sci, 66, pp.1197~1204 (2009)[DOI]
- Fassler SMM, "Depthe-dependent swimbladder compression in herring Clupea haengus obserbed using magnetic resonance imaging", J Fish Bio, 74, pp.296~303 (2009)[DOI]
- Foote KG, "Importance of the swimbladder in acoustic scattering by fish : A Comparison of gadoid and mackerel target strengths", J Acoust Soc Am, 67, pp.2084~2089 (1980)
- Jaffe JS, "Using multi-angle scattered sound to size fish swimbladders", ICES J Mar Sci, 63, pp.1397~1404 (2006)[DOI]
- Jaffe JS, "Estimating fish orientation from broadband, limited-angle, multiview, acoustic reflections", J Acoust Soc Am, 129, pp.670~680 (2011)[DOI]
- 이대재, "펄스압축기법을 이용한 활어 개체어에 대한 광대역 음향산란신호의 분석 및 식별", 한국수산과학회지, 48(2), pp.207~220 (2015), 한국수산과학회
- Lord RT., "Aspect of stepped-frequency processing for lowfrequency SAR systems", 박사, pp.2000
- Min JH, "Study on changes in shape of denatured area in skullmimicking materials using focused ultrasound sonication", IEIE Trans Smart Proces Comput, 3, pp.28~34 (2014)[DOI]
- Mott PH, "Acoustic and dynamic mechanical properties of a polyurethane rubber", J Acoust Soc Am, 111, pp.1782~1790 (2002)[DOI]
- Neo RW, "Near-resonance scattering from arrays of artificial fish swimbladders", J Acoust Soc Am, 121, pp.132~143 (2007)[DOI]
- Nesse TL, "Measurement of acoustic-scattering spectra from the whole and pars of Atlantic mackerel", ICES J Mar Sci, 66, pp.1169~1175 (2009)[DOI]
- Stanton TK, "New broadband methods for resonance classification and high-resolution imagery of fish with swimbladders using a modified commercial broadband echosounder", ICES J Mar Sci, 67, pp.365~378 (2010)[DOI]
- Stanton TK, "Resonance classification of mixed assemblages of fish with swimbladders using a modified commercial broadband acoustic echosounder at 1-6 kHz", Can J Fish Aquat Sci, 69, pp.854~868 (2012)[DOI]
- Traykovski LVM, "Effect of orientation on broadband acoustic scattering of Atlantic krill Euphausia superb : Implications for inverting zooplankton spectral acoustic signatures for angle of orientation", J Acoust Soc Am, 104, pp.2121~2135 (1998)
- Wear KA, "Relationships of ultrasonic backscatter with ultrasonic attenuation, sound speed and bone mineral density in human calcaneus", Ultrasound Med Biol, 26, pp.1311~1316 (2000)[DOI]