舰船辐射噪声指向性统计模型及分析方法

Statistical model and analysis method for spatial directional distribution of ship radiated noise

为了研究舰船目标辐射噪声空间特性,以单一部位垂向剖面的噪声指向性为例,建立了基于稳健回归理论和实测数据的舰船目标辐射噪声指向性的统计模型,给出了相应的统计分析方法,并开展了海上实测数据分析研究,验证了该模型及分析方法的正确性和可行性。同时,研究结果也表明:该统计模型及方法具有简单灵活、实用和可靠等优点,适用范围广,可为深入分析不同航行工况及测试环境条件下各类舰船目标的噪声空间特性及其统计规律创造条件。

To investigate the spatial distribution characteristics of the ship target＇s radiated noise,this paper takes the noise directivity of a single vertical section as an example to establish the statistical model for directivity of ship target＇s radiated noise based on the robust regression analysis theory and actually measured data. The verification study for aforementioned model and method is carried out based on corresponding statistical analysis method and the analysis of the data acquired on the sea. The research results showed that the statistical model and analysis method are simple,practical and reliable,having a wide application scope,and they are very helpful to investigate and evaluate spatial characteristics and statistical rules of underwater radiated noise originated from various ship targets under different sailing conditions and test circumstances.