CAJ | 학술논문

为提高拖曳接收换能器的灵敏度，对该换能器的性能进行改进研究。对拖曳接收换能器的电声性能进行有限元仿真，将原拖曳接收换能器内有机玻璃盖板替换为铜质盖板及在压电陶瓷圆管内增加软木橡胶背衬，并对改进前后的性能进行对比分析。结果表明，改进后的拖曳接收换能器的灵敏度起伏在4 dB以内，且指向性特性没有明显变化。通过改进设计后，能大幅减小换能器的灵敏度起伏，可简化后级处理电路，同时提高系统的动态范围。
위제고타예접수환능기적령민도，대해환능기적성능진행개진연구。대타예접수환능기적전성성능진행유한원방진，장원타예접수환능기내유궤파리개판체환위동질개판급재압전도자원관내증가연목상효배츤，병대개진전후적성능진행대비분석。결과표명，개진후적타예접수환능기적령민도기복재4 dB이내，차지향성특성몰유명현변화。통과개진설계후，능대폭감소환능기적령민도기복，가간화후급처리전로，동시제고계통적동태범위。
For improving sensitivity of towed receiving hydrophone, carry out improvement and research of hydrophone performance. The electroacoustic performance of towed receiving hydrophone is simulated by finite element, replace the plexiglass cover plate with the copper plate and adding cork rubber liners in piezoelectric ceramics circular tube. Then compare and analyze the performances before and after improvement. The result shows that the undulation of sensitivity can be improved less than 4 dB, while the directivity of the receiving hydrophone change less. By improving the design, it can greatly reduce the sensitivity fluctuation receiving hydrophone, which can simplify the post stage circuit, and improve the dynamic range of the system.