Effectiveness Analysis of High Frequency Active Sonar

The problem of target detection is of great interest for active sonar system in ocean environment. Since obstacle and mine are risk factors for operating ship and submarine, therefore in this thesis, modeling and simulation code based on the active sonar detection algorithm is developed and tested for a specific scenario to detect target. The active detection MOE is defined as Cumulative Detection Probability (CDP) calculated from Detection of Probability (PD). In order to calculate PD, Signal Excess (SE) is calculated by active sonar equation from sonar parameters and, SE calculate PD with log - normal distribution. Also, the specification of multi beam sonar system is used to derive two steered beam pattern. The developed codes are applied to demonstrate its applicability. Finally, discussions are presented.목차 = i 그림 목차 = ii 표 목차 = iv Abstract = v 1. 서론 = 1 1.1 연구의 필요성 및 목적 = 1 1.2 연구동향 = 3 1.3 논문의 구성 = 4 2. 능동탐지효과도 이론 = 5 2.1 능동탐지효과도 개념 = 5 2.2 능동탐지효과도 계산 = 7 2.2.1 탐지확률 = 7 2.2.2 누적탐지확률 = 18 3. 능동탐지효과도 분석 시뮬레이션 = 20 3.1 시뮬레이션 환경 = 20 3.1.1 기동 시나리오 = 20 3.1.2 소나형상에 따른 빔 패턴 = 27 3.1.3 능동소나 탐지확률 계산 = 34 3.2 능동탐지효과도 분석 = 40 3.2.1 탐지소나 기동패턴에 따른 탐지확률 = 40 3.2.2 탐지소나 기동패턴에 따른 누적탐지확률 = 61 4. 결론 = 64 참고문헌 = 6