水下无人航行器声学系统实收实发声隔离度分析研究

对某水下无人航行器声学系统在特定间距及频段条件下实收实发声隔离度进行了分析研究。在分析某水下无人航行器载体基本结构特征的基础上,通过ANSYS有限元建模仿真软件,对航行器声学系统实现实收实发的指向性和隔离度进行了仿真计算,并在消声水池对航行器声学系统实收实发隔离度进行了实验测试。研究结果表明,收发间距为3 m时具有一定的收发隔离度,若对隔离度有更高要求,则需采取调整收发换能器间距或对接收水听器加装吸声障板等技术措施,可为水下无人航行器声学系统设计及实现实收实发提供技术支持。

Analysis of underwater acoustic isolation effect for real-time receiving and sending of UUV acoustic system

The acoustic isolation degree between real-time receiving and sending of an underwater unmanned vehicle is analyzed in the specific separation and frequency range.Based on analyzing the structure characteristics of an underwater unmanned vehicle,underwater acoustic isolation effect for real-time receiving and sending of Underwater Unmanned Vehicle (UUV) acoustic system is simulated by the software ANSYS,and the corresponding isolation testing experiment is carried out in anechoic tank.The results show that the spacing of 3 meters provides a certain degree of acoustic isolation,if a higher degree of isolation is required,it will be necessary to adjust the distance between receiving and transmitting transducer,or add acoustical baffle for the receiving transducer,or take other technical measures.The results of the research can provide a technical support for the design and implementation of underwater unmanned vehicle acoustic system to achieve real-time receiving and sending.