基于高斯射线的压电陶瓷水声消声方法

Underwater Anechoic Method of Piezoelectric Ceramic Based on Gaussian-ray Model

水声消声可用于潜艇降噪、隐身,以及保护海洋通信设备不受外界声场的影响等方面。为了使讨论的压电陶瓷水声消声方法更客观更具实用性,采用主动声纳常用的脉冲调制信号在海洋中传播了一定距离后的声波作为声源,其中声波的计算采用高斯射线模型。此方法既具有射线方法的灵活方便的特点,又保留了波场的动力学特征,具有其他水声传播模型不可替代的优势。仿真模拟了水声信号传播较真实的环境,实用性、可参考性高。仿真结果表明压电陶瓷水声消声方法是有效的。

Underwater anechoic method can be used for submarine noise reduction and stealth. It also can be used to protect the underwater acoustic communication equipments from being affected by external underwater acoustic field. In order to make the method discussed in this paper objective and practical, acoustic wave produced by pulse- modulation- signal of active sonar, which has been transmitted in some distance in ocean, it is used in the model. The calculation of the acoustic wave use Gaussian- ray model which has irreplaceable advantages. This method simulates a relatively real marine environment, which is practical and has certain reference value. The result of the simulation shows that underwater anechoic method of piezoelectric ceramic is effective.