초록 ▼

◇ 선박 운행 시 수중물체와 충돌을 방지하여 안전을 확보하고 고래자원을 보호하기 위한 3차원 전방감시소나 시스템의 연구 개발 및 사업화 목표
◇ 수중음향이론에 의한 수치해석과 트랜스듀서 설계 기법을 사용해 전방감시소나 사양 및 파라미터 도출
◇ 선박의 운동특성 분석, 유동소음 연구 및 POD 압력 분포, 캐비테이션 분석
◇ 고효율 송수신, 멀티빔 신호처리, 회상처리 알고리즘 개발 및 성능검증
◇ 전방감시소나 트랜스듀서 설계, 제작 및 성능검증
◇ 트랜스듀서 컨트롤러, 신호처리장치, 3차원 운용소프트웨어 개

◇ 선박 운행 시 수중물체와 충돌을 방지하여 안전을 확보하고 고래자원을 보호하기 위한 3차원 전방감시소나 시스템의 연구 개발 및 사업화 목표
◇ 수중음향이론에 의한 수치해석과 트랜스듀서 설계 기법을 사용해 전방감시소나 사양 및 파라미터 도출
◇ 선박의 운동특성 분석, 유동소음 연구 및 POD 압력 분포, 캐비테이션 분석
◇ 고효율 송수신, 멀티빔 신호처리, 회상처리 알고리즘 개발 및 성능검증
◇ 전방감시소나 트랜스듀서 설계, 제작 및 성능검증
◇ 트랜스듀서 컨트롤러, 신호처리장치, 3차원 운용소프트웨어 개발 및 성능검증
◇ 전방감시소나 시제품 시험평가 및 성능검증
◇ 전방감시소나 실해역 탐지성능 평가 및 성능검증
◇ 연구개발결과를 Multi-Beam Echo Sounder 항만방어소나 등의 기술개발에 활용

Abstract ▼

IV. The Result of Research and Development
1. Numerical analysis of detection performance of Forward Looking Sonar system performance by theory of underwater acoustic.
- Theory of underwater acoustics for numerical analysis of detection performance
- Numerical analysis of detection performa

IV. The Result of Research and Development
1. Numerical analysis of detection performance of Forward Looking Sonar system performance by theory of underwater acoustic.
- Theory of underwater acoustics for numerical analysis of detection performance
- Numerical analysis of detection performance of Forward Looking Sonar System
2. Transducer design and numerical analysis of 3-D Forward Looking Sonar
- Numerical analysis of acoustic field according to transducer size and frequency
- Analysis of arrangement for the optimum arrangement according to frequency and for ensuring maximum channel
3. Comparative analysis on characteristics of the movement between normal and hydrofoil ships
- Numerical analysis
- The result of comparative analysis on characteristics of the movement
4. Research of flow noise from slab moving at high speed underwater
- Installation of POD hydrophone for flow noise measurement and acoustic characteristics analysis
- Manufacturing of data acquisition device for flow noise measurement and acoustic characteristics analysis
5. Generating specification of 3-D Forward Looking Sonar System and sonar parameters
- Generating sonar parameters
- Specification of 3-D Forward Looking Sonar System
6. Development of noise prediction model reflecting hydrofoil shape and ship's speed
- Experiment on the sea
- Result of experiment and analysis
- Conclusion of research on flow noise
7. Development and manufacturing of transducer to be installed m POD
- Design and manufacturing of 1st circular transducer
- Design and manufacturing of POD-integrated 1st transducer
- Analysis of transducer characteristics
- Preparation of installation of POD-integrated transducer
8. Analysis of acoustic characteristics of transducer and research on environmental model according to sea conditions
- Manufacturing printed circuit board for analysis of acoustic characteristics of Ponvard Looking Sonar transducer
- Numerical computation and observation of acoustic field of Forward Looking Sonar
- Measurement of reception and transmission sensitivity of Forward Looking Sonar
- Measurement of sound velocity and reduction coefficient on acoustic window of Forward Looking Sonar
- Numerical calculation of acoustic refraction and penetration loss on acoustic window for POD
- Analysis of environmental models on the various sea conditions
9. Analysis of pressure distribution according to the shape of POD
- Overview and objectives of research
- Numerical analysis
- Result of numerical analysis
- Conclusion
10. Design, manufacturing and performance verification of high efficiency transceiver module for 3-D Forward Sonar
- Design and manufacturing of printed circuit board of multi-channel acoustic transmission
- Design and manufacturing of multi-channel reception board
- Performance verification
11. Development and performance verification of high-speed and mass data signal processing algorithm and image processing algorithm
- Design and manufacturing of high-speed transmission board for mass DATA
- Design and manufacturing of restoration board for high-speed reception DATA(DEMUX)
- Design and manufacturing of signal processing hardware using CPU for DSP
- Performance verification
12. Elimination of reverberation using matched filtering and reverberation whitening techniques
- Overview of reverberation research
- Reverberation whitening algorithm
- Application of experimental data
- Determination of degree p and AR coefficient
- Whitening of target synthetic signal
13. Design and manufacturing of POD-integrated transducer
- Manufacturing of POD-integrated 1st transducer
- Manufacturing of POD- integrated 2nd transducer
- Characteristic analysis of 1st and 2nd transducer
14. Design and manufacturing of Forward Looking Sonar System
- Design of basic hardware
- Design and manufacturing of POD internal controller
- Design, manufacturing of rack type signal processing unit
- Electro-Magnetic Compatibility and airborne sound experimental of rack type signal processing unit
- Development of 3-D operating software
15. Development and realization of signal processing algorithm
- Theory of line array signal processing
- Quadrature Sampling
- Array signal processing
16. Target strength of underwater floating objects that are recognized as underwater targets
- Target strength of cetaceans in the sea
17. Development of beam-forming technology of sonar reception data
- Quadrature Beam-forming Method
18. Test, evaluation and correction of trial product of Forward Looking Sonar System
- Acoustic characteristics of trial product of Forward Looking Sonar System
- Water tank experiment of Forward Looking Sonar System
- Performance verification of trial product of Forward Looking Sonar System
: simulator
- Performance verification of trial product of Forward Looking Sonar System
: 1st experiment on the sea - lighters wharf
- Performance verification of trial product of Forward Looking Sonar System
: 2nd experiment on the sea - towing towfish
- Performance verification of trial product of Forward Looking Sonar System
: 3rd experiment on the sea - rubber boat target
- Performance verification of trial product of Forward Looking Sonar System
: 4th experiment on the sea - merchant ship target
19. Evaluation of detecting performance of Forward Looking Sonar System on the sea
- 1st sea operational test of trial product of Forward Looking Sonar System
- 2nd sea operational test of trial product of Forward Looking Sonar System
- 3rd sea operational test of trial product of Forward Looking Sonar System
20. Analysis of cavitation that occur during high-speed operation
- Analysis of the cause of noise increasing at high-speed passenger ship
- Simulation of flow analysis on the POD
- Observational experiment of POD cavitation
- Design and manufacturing of POD-integrated 3rd transducer that extended shape of hydrofoil POD
- Conference for installation of POD-integrated 3rd transducer
- Experiment on the sea of POD-integrated 3rd transducer