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원통면 음향 홀로그래피를 이용한 수중음향 곡면배열센서의 빔 해석
권휴상(Kwon, Hyu-Sang),박성철(Park, Seong-Chol),서희선(Seo, Hee-Seon),신구균(Shin, Gu-Kyun),조치영(Joh, Ghee-Young) 한국소음진동공학회 2009 한국소음진동공학회 논문집 Vol.19 No.10
As an experimental technique to analyze the far-field characteristics of underwater cylindrical array sensors, cylindrical acoustic holography is studied. Inside an laboratory water tank, far-field directivity patterns as well as near-field source images are reconstructed from the measured hologram by hydrophone array. Approximate equation for far-field directivity estimation is derived based on stationary phase method. The simulation and experiment show well usefulness of the proposed method in application of underwater array sensors.