中文摘要：

水下离子体定向辐射声源作为一项新兴技术,具有声源级高、脉宽窄、频带宽的特点。论文介绍了水声干扰原理及声源需求分析,阐述了水下等离子体定向辐射声源的产生原理,研制了水下等离子体定向辐射声源产生系统,进行了水下强声脉冲远程传播的湖上实验,研究了远程传播特性,分析了其波形及功率谱与水声干扰需求的适用性。测试结果表明,水下等离子体声源的声源级高、频带宽,在水声对抗中具有良好的应用前景。

英文摘要：

As a new technology,underwater shockwave has the characteristics of high sound level,narrow pulse width and wide frequency band.The underwater acoustic interference principles and demand analysis of sound source are elaborated,the underwater plasma directional radiation sound source generation mechanism,bunching up principles and the corresponding generation system are introduced,the remote propagation experiment of underwater shockwave is carried out in the lake,the waveforms and the corresponding power spectrums are also analyzed.The results show that the maximum source level of the plasma sound source is high and the frequency band is wide,which has a good application prospect in underwater acoustic countermeasure.