저주파 광대역 심벌 벡터 하이드로폰 개발

초록

Since general acoustic hydrophones are omnidirectional, it is difficult to detect the direction of propagation of sound waves just by measuring the magnitude of the received sound pressure. These difficulties can be overcome using vector hydrophones. In this study we propose a new structure of a vector hydrophone that simultaneously finds the magnitude and direction of sound waves using two cymbal transducers with matching sensitivity. First, the performance of the initial model of the proposed cymbal vector hydrophone was analyzed. Then the effect of the structural variables on the performance of the vector hydrophone was analyzed. From this result the structure of the vector hydrophone with the maximum sensitivity was derived. Finally the validity of the design was verified by fabricating prototypes of the derived cymbal vector hydrophones and comparing their measured performance with the calculated values.

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