一种简化的船舶辐射噪声源模型  

A SIMPLIFIED MODEL FOR SHIP'S RADIATED NOISE SOURCES

作　　者：孟春霞[1,2] 杨士莪[1] 李桂娟 

机构地区：[1]哈尔滨工程大学水声工程学院,哈尔滨150001 [2]大连测控技术研究所,大连116013

出　　处：《振动与冲击》2008年第10期95-97,194,共3页Journal of Vibration and Shock

基　　金：水下测控技术国防科技重点实验室基金资助项目(9140C260102070C26)

摘　　要：船舶水下辐射噪声在近场具有复杂的空间强度分布,为了准确地分析船舶水下辐射噪声的特性,建立了一个由多极子组成的简化的船舶辐射噪声源模型。在证明了该模型的合理性之后,利用优化算法由船舶目标的不同航次的近场噪声数据反演出简化模型中的参数,并由反演得到的参数反算另一航次的声压值,然后将反算的声压值与理论声压值进行对比。仿真结果表明在船舶辐射噪声的近场,所建立的简化的船舶辐射噪声源模型是有效的。Underwater radiated noise of a ship possesses complex spatial intensity distribution.In order to accurately analyze the characteristic of underwater radiated noise of a ship,a simplified model of the ships' noise sources composed of several multi-pole sources is established.After proving the validity of the model,the target's source parameters are inversed using an optimized algorithm through processing the noise data of the ship in different trips,then the sound pressure in another trip is calculated using multi-pole coefficients obtained from inversions.A comparison between the simulation results of the sound pressure of the ship noise using this method and the theoretical results shows that this simplified model is effective.

关 键 词：船舶 辐射噪声 声源模型 

分 类 号：TB53[理学—物理]