摘要
针对以往潜艇水下辐射声计算时间长,实时性不强的缺点,通过类柱体结构模拟潜艇舱段,研究其辐射声状态快速评估方法。利用加速度传感器测得水下类柱体结构表面振动信息,快速估算出其辐射声压,抽取分析频段内各个1/3Oct的频带声压级,作为辐射声的特征向量。并通过事先训练好的模糊支持向量机分类器,对辐射声特征向量进行识别,快速评估出当前的声隐身状态。探讨了一种潜艇声隐身状态快速评估的实现方法。
Aiming at satisfying the real time request of acoustic computation, a new method of fast evaluating a-coustic stealth condition of submarine was proposed. The submarine cabin was simulated as an underwater cylindrical structure. Using the measured accelerations of the cylindrical shell, rapid radiated noise calculation was realized. The sound levels of each 1/3Oct frequency band in analysis frequency range were extracted as the feature vectors of radiated noise, which were then recognized by a trained fuzzy support vector machine. So the acoustic stealth condition of the cylindrical structure can be evaluated rapidly.
出处
《振动与冲击》
EI
CSCD
北大核心
2008年第7期113-117,共5页
Journal of Vibration and Shock
基金
国防科技预研基金资助项目(9140A10050506JB1113)
关键词
声隐身状态
模式识别
辐射声
模糊支持向量机
acoustic stealth condition
pattern recognition
radiated noise
fuzzy support vector machine
