摘要
为了轻便快捷地获取潜艇发射雷弹时的辐射噪声,基于潜艇"水放"操纵训练理论,设计了通过本艇进行回转机动利用艇载拖曳线列阵声纳测量的方案。基于试验的实际情况,根据潜艇拖曳阵模型,仿真生成了各水听器阵元与本艇的位置关系;根据噪声源理论模型分析产生雷弹发射模拟噪声,利用SαS分布模拟武器发射冲击噪声,仿真分析模拟噪声在海洋环境中的传播衰减,对阵元信号分别利用最小方差无畸变响应法(MVDR)、空间平滑MVDR以及适应子带的波束域多重信号分类(BMUSIC)算法进行信号处理,得到发射噪声的声源级、频谱结构和方位。仿真结果表明,试验设计方案在减少测量成本、简化试验保障条件的基础上,实现分离发射噪声和潜艇辐射噪声的目标,可以获取开展发射装置减振降噪研究的发射噪声数据。
Based on the exercitation theory of‘ launching water＇, a simulation of measuring torpedo launch noise by using subma- rine＇s towed hydrophone array was conducted through constant radius turn manoeuvre of submarine. Position parameters were obtained from the simulation with the model of towed array. Based on the theory of radiated noise forming, the launch noise was simulated according to test condition in Laboratory, and the result showed the launch impulsion noise obeyed Sots distribution. The simulated noise attenuating in deep sea was analyzed with a sound loss translation model. Minimum variance distortionless response（MVDR） ,spatially smoothed MVDR, and beam-space multiple signal classification（BMUSIC） algorithm were adopted to process the signal, hence the source level, the frequency structure and the location of the launch noise were achieved. Simulation results show that the test scheme is feasible, and launch noise data can be obtained for the research of vibration suppression and noise reduction in torpedo launcher.
出处
《鱼雷技术》
2009年第2期53-56,共4页
Torpedo Technology
关键词
拖曳线列阵声纳
噪声检测
发射装置
发射噪声
减振降噪
towed array sonar
noise measurement
launch tube
launch noise
vibration suppression and noise reduction
