摘要
针对舰船辐射噪声中线谱检测及提取难问题,研究了基于矢量水听器的自适应线谱增强器。利用矢量水听器同步、同点测量声场的声压和振速的特点,将传统自适应线谱增强器改进为双输入结构,由于所测声压信号与振速信号间的相关性,提高了线谱增强的效果。通过实测数据对改进算法进行了验证,并在Simulink中的DSP Bulider平台下对改进的自适应线谱增强算法予以实现。
Aiming at the problem of difficult detection and extraction of the line spectra in the ship-radiated noise,the adaptive line-spectrum enhancer based on the vector hydrophone is investigated in this paper.Taking the advantage of vector hydrophone which can synchronously measure the sound pressure and vibration velocity,the conventional adaptive line-spectrum enhancer has been improved as the double input structure.Due to the relativity between the sound pressure signal and vibration velocity signal,the effect of line-spectrum enhancement can be enhanced.The improved algorithm is validated by the measured data and the adaptive line-spectrum enhancement algorithm is implemented based on the DSP Bulider platform in Simulink.
出处
《压电与声光》
CAS
CSCD
北大核心
2017年第2期248-251,共4页
Piezoelectrics & Acoustooptics
基金
"十二五"国防预研基金资助项目(4010603020301)
