一型拖轮下方辐射噪声空间分布特性分析

Measurement and analysis of the spatial distribution of underwater noise radiated from tugboat

以拖轮为代表的舰船下方辐射噪声空间分布特性研究对于以被动方式工作的探测设备和水下攻防装备的开发与研制具有重要意义。基于直线阵测量系统获取的拖轮下方辐射噪声数据,利用通过以特性分析为基础的数据处理与分析方法,对该拖轮下方辐射噪声的空间分布特性进行分析,获得了被测拖轮下方的特征线谱、连续谱及总声级等典型的水平等声压分布曲线,研究成果为该类水面目标的有效探测和识别等提供了重要依据。

It is import to study the characteristics of the spatial distribution of the underwater noise radiating from tugboat for the research and development of the detection tools in passive working mode and the underwater defense equipment.In this paper,based on the noise data obtained from the linear array under the tugboat,the spatial distribution of sound field below the tugboat is analyzed by using data processing and analyzing method from the characteristic analysis theory.The characteristic line-spectrum,continuous spectrum and total pressure level of the sound field are derived from the raw data.These are the classical acoustic curves for revealing the features of the sound field,and can be considered as important supports for the detection and recognition of tugboat-like targets.