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多频海底声学原位测试系统是国家海洋局第二海洋研究所自行研制的海底声学原位测试系统。利用声源换能器的等效电路,分析了声源换能器输入终端输入脉冲与输出接收脉冲之间的关系。将系统的低频声源等效为一定半径的球形声源,确定了系统在15kHz时在试验海域海水中的声源换能器的角频率响应和输出回路品质因子。计算了系统理论接收脉冲,结果表明输出接收脉冲并非输入脉冲的简单复制。并与实测接收脉冲进行了比对,理论接受脉冲与实测脉冲在细节上达到了很好的匹配,说明本文确定的各响应参数很好的代表了本系统在海水中的声源响应。
Multi-frequency underwater acoustic in-situ test system is the second marine Institute of the State Oceanic Administration seabed acoustic in-situ test system. The equivalent circuit of the sound source transducer is used to analyze the relationship between the input pulse of the input terminal of the sound source transducer and the output receiving pulse. The low-frequency sound source of the system is equivalent to a spherical sound source with a certain radius, and the angular frequency response of the sound source transducer and the quality factor of the output circuit of the system at 15 kHz in the seawater under test are determined. The system theory receives the pulse, and the result shows that the output received pulse is not a simple copy of the input pulse. Compared with the measured received pulse, the theoretical received pulse and the measured pulse are well matched in the details, indicating that the response parameters identified in this paper represent the sound source response of the system well in seawater.