中文摘要：

为了分析强声脉冲对自导系统的作用效果,需要研究声自导换能器在强声脉冲下的响应特性。根据导纳圆图法建立了复合棒型声换能器的等效电路模型,并进行了仿真。仿真中强声脉冲信号使换能器等效电路产生振荡。在水下强声试验系统中进行了水下强声试验,采集了强声脉冲信号及换能器输出信号,试验中强声脉冲亦使换能器产生了振荡,与仿真结果相符,也验证了等效电路模型的合理性。研究还发现,不同换能器产生的振荡相关性差,使方位估计无法正常进行。试验结果表明,强声脉冲可对自导系统产生明显的压制效果,使其进入致盲状态,对抗效果明显。

英文摘要：

To evaluate the effect of intense sound pulse on homing system,the response characteristic of acoustic transducer to intense sound pulse is investigated.An equivalent circuit model of typical transducer is established based on the admittance circle diagram method.With this model,the response characteristic is analyzed by computer simulations,and the results show that an oscillation appears in the equivalent circuit due to the intense sound pulse.Water tank experiment is conducted in un-derwater intense sound experiment system,and the intense sound pulse signal as well as the output signal of the transducer is collected.In the experiment,intense sound pulse also leads to an excited oscillation of the transducer,which validates the cor-rectness of the equivalent circuit model.Furthermore,the correlation among responses of different transducers is poor,which disturbs bearing estimation process.The experimental results indicate that intense sound pulse imposes an apparent suppres-sion effect on the homing system,and brings torpedo into a blinding status.