摘要
为了进一步研究水下低频声源特征,本研究基于液体表面波的声光衍射原理,对低频声源在不同入水深度位置处的液体表面波进行研究。通过建立精准的水下定位装置系统,改变声源在水下的位置,实验中可观察到不同光强度的衍射图样,图样清晰且稳定,呈明暗相间状。理论上分析了表面波的光衍射效应,得到了衍射光斑空间分布呈不对称性。实验结果表明,随着声源入水深度的逐渐增加,衍射光斑强度逐渐减少,最高衍射级次逐渐减少,衍射光斑尺寸逐渐减小,且衍射光斑位置呈不对称分布。实验结果与理论分析相吻合。
In order to further study the characteristics of underwater low frequency sound source,based on the acoustooptic diffraction principle of liquid surface wave,the liquid surface wave of low frequency sound source at different depth of water entry was studied.By establishing an accurate underwater positioning device system and changing the position of sound source underwater,diffraction patterns of different light intensity can be observed in the experiment.The pattern is clear and stable,alternating between light and dark.The diffraction effect of surface wave is analyzed theoretically,and the spatial distribution of diffraction spot is asymmetrical.The experimental results show that the intensity of diffraction spot decreases gradually,the highest diffraction order decreases gradually,the size of diffraction spot decreases gradually,and the position distribution of diffraction spot is asymmetrical with the increase of the depth of sound source entering water.The experimental results are consistent with the theoretical analysis.
作者
王江宏
WANG Jianghong(Shaanxi Institute of Technology,Xi’an 710300 China)
出处
《系统仿真技术》
2022年第2期109-113,共5页
System Simulation Technology
关键词
液体表面波
衍射光斑
声源深度
不对称性
光斑尺寸
liquid surface
diffraction pattern
the sound source depth
asymmetry
spot size
