声诱饵电子舱散射声场对接收信号影响研究

Research on the effect of acoustic bait electron scattered sound field on received signal

声诱饵是水声对抗中的重要武器,其对抗性能受接收信号质量的影响,而电子舱的散射声场是引起接收信号畸变的因素之一。为此,本文利用有限元软件COMSOL Multiphysics计算诱饵电子舱的散射声场,通过频域间接法获取有/无电子舱时的接收信号,利用相关分析法获取两信号之间的相关系数,进而评估接收信号受电子舱影响的畸变程度。仿真结果表明,接收信号质量和散射声压呈负相关,接收点远离电子舱、置于电子舱圆头正前方以及采用具有吸收特性的材料可以有效地提高接收信号的质量,在工程应用中具有指导意义。

Acoustic bait is an important weapon in underwater acoustic countermeasures.Its countermeasure performance is affected by the quality of the received signal,and the scattered sound field of the electronic cabin is one of the factors that cause the distortion of the received signal.To this end,this article uses COMSOL Multiphysics to calculate the scattered sound field of the bait electronic cabin,obtain the received signal with or without the electronic cabin through the frequency domain indirect method,and use the correlation analysis method to obtain the correlation coefficient between the two signals,and then evaluate the degree of distortion of the received signal affected by the electronic cabin.Simulation results show that there is a negative correlation between the received signal quality and the scattered sound pressure,and the receiving point is far away from the electronic cabin,placed above the round head of the electronic cabin,and the use of materials with absorption characteristics can effectively improve the quality of the received signal,which has guiding significance in engineering applications.