In this study, Target strength for multi-frequency (38 kHz, 70 kHz, 120 kHz and 200 kHz) of chub mackerel (Scomber japonicus) was estimated using by the KRM model. The body shape of the Chub mackerel was described by an X-ray system and the body length of 20 individuals ranged from 16 cm to 28 cm. The swimbladder tilt angle ranged between – 8 and – 14°, the maximum TS value according to the swimming angle of chub mackerel was – 33.0 dB at – 11°. The averaged TScm according to fork length was – 66.02 dB at 38 kHz, – 66.50 dB at 70 kHz, – 66.00 dB at 120 kHz and – 67.35 dB at 200kHz, respectively.

서 론
재료 및 방법
    고등어의 체형 묘사
    음향산란이론 모델
결과 및 고찰
    유영자세각에 따른 고등어의 TS
    고등어 체장에 따른 고등어의 TS
결 론
References

• 박근창(전남대학교 수산과학과) | Geunchang PARK (Division of Fisheries Science, Chonnam National University, Yeosu 59626, Korea)
• 오우석(전남대학교 수산과학과) | Wooseok OH (Division of Fisheries Science, Chonnam National University, Yeosu 59626, Korea)
• 오선영(전남대학교 수산과학과) | Sunyoung OH (Division of Fisheries Science, Chonnam National University, Yeosu 59626, Korea)
• 이경훈(전남대학교 해양생산관리학과) Corresponding author