[논문]양상태 표적강도를 고려한 소나 탐지성능 분석

양원준; 김동욱; 이대혁; 최지웅; 손수욱

doi:10.7776/ask.2024.43.3.305

양상태 표적강도를 고려한 소나 탐지성능 분석
Sonar detection performance analysis considering bistatic target strength

한국음향학회지= The journal of the acoustical society of Korea, v.43 no.3, 2024년, pp.305 - 313

양원준 (한양대학교 해양융합과학과) , 김동욱 (한양대학교 해양융합과학과) , 이대혁 (한양대학교 해양융합과학과) , 최지웅 (한양대학교 ERICA 해양융합공학과) , 손수욱 (국방과학연구소)

초록
AI-Helper

효과적인 양상태 소나 운용을 위해서는 해양환경 요인에 의한 음파전달 특성과 표적의 정보를 반영한 탐지성능 분석이 수행되어야 한다. 하지만 기존의 양상태 소나 탐지성능 분석은 해양환경 및 표적 특성을 고려하지 않거나 단순화되어 수행되었다. 따라서 본 연구에서는 서해와 울릉분지 해역에서 해양환경과 표적의 특성을 고려한 양상태 탐지성능을 산출하였다. 잠수함 형상을 가지는 표적에 대한 양상태 표적강도 도출을 위해 수치해석 모델을 활용하였으며, 모의된 표적강도를 반영하여 신호초과를 계산하였다. 그 결과 송·수신기 위치, 양상태 표적강도에 따라 유의미한 탐지성능 변화가 확인되었다.

Abstract ▼ AI-Helper

For effective bi-static sonar operation, detection performance analysis must be performed reflecting the characteristics of sound propagation due to the ocean environment and target information. However, previous studies analyzing bistatic sonar detection performance have either not considered the ocean environment and target characteristics or have been conducted using simplified approaches. Therefore, in this study, we compared and analyzed the bistatic detection performance in Yellow sea and Ulleung basin both with and without considering target characteristics. A numerical analysis model was used to derive an accurate bistatic target strength for the submarine-shaped target, and signal excess was calculated by reflecting the simulated target strength. As a result, significant changes in detection performance were observed depending on the source and receiver locations as well as the target strength.

주제어

표/그림 (9)

그림 Fig. 1. (Color available online) Target shape and coordinate of incident angle and scattering angle.
그림 Fig. 2. (Color available online) Target strength of BeTSSi II submarine at 1.7 kHz.
그림 Fig. 3. (Color available online) Target strength results in polar coordinates centered on the receiver. (a) Monostatic target strength. And bistatic target strength when source is located to the right side of the receiver at a distance of (b) 10 km, (c) 20 km and (d) 30 km and above of the receiver at a distance of (e) 10 km, (f) 20 km and (g) 30 km.
그림 Fig. 4. (Color available online) (a) Sound speed profile in summer, (b) bathymetry of Yellow sea and (c) sound transmission loss in north direction at receiver position.
그림 Fig. 5. (Color available online) Simulation results of active signal excess at Yellow sea when the source is located in the eastern direction of the receiver. Assuming single target strength value with source to receiver ranges are (a) 0 km, (c) 10 km, (e) 20 km and applying bistatic target strength with source to receiver ranges are (b) 0 km, (d) 10 km, (f) 20 km respectively.
그림 Fig. 6. (Color available online) Simulation results of active signal excess at Yellow sea when the source is located in the northern direction of the receiver. Assuming single target strength value with source to receiver ranges are (a) 0 km, (c) 10 km, (e) 20 km and applying bistatic target strength with source to receiver ranges are (b) 0 km, (d) 10 km, (f) 20 km respectively.
그림 Fig. 7. (Color available online) (a) Sound speed profile in summer, (b) bathymetry of East sea and (c) sound transmission loss in north direction at receiver position.
그림 Fig. 8. (Color available online) Simulation results of active signal excess at East sea when the source is located in the eastern direction of the receiver. Assuming single target strength value with source to receiver ranges are (a) 0 km, (c) 10 km, (e) 20 km and applying bistatic target strength with source to receiver ranges are (b) 0 km, (d) 10 km, (f) 20 km respectively.
그림 Fig. 9. (Color available online) Simulation results of active signal excess at East sea when the source is located in the northern direction of the receiver. Assuming single target strength value with source to receiver ranges are (a) 0 km, (c) 10 km, (e) 20 km and applying bistatic target strength with source to receiver ranges are (b) 0 km, (d) 10 km, (f) 20 km respectively.

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상세보기
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저자의 다른 논문 :

표제어: PCR

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용어 설명: PCR은 세균 특이성이 있는 primer를 이용하여 적은 수의 세균이 있을지라도 쉽게 검출할 수 있는 유용한 방법이며, 이를 이용하여 구강 내 치면세균막이나 타액에서 직접 세균을 검출할 수 있게 되었다[8].

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