深海矢量噪声场声传播特性研究

发布时间：2018-03-11 04:32

本文选题：矢量水听器　切入点：背景噪声　出处：《船舶力学》2017年10期 　论文类型：期刊论文

【摘要】：矢量声压振速联合处理是建立在信号的声压和质点振速相位基础上,海洋环境边界对声传播的影响将改变矢量声场声压和质点振速的幅度和相位特性。文章根据南海环境条件和水下目标辐射噪声测量采用矢量简正波理论估算海面非相干偶极子噪声源和水下点声源矢量场的幅度和相位随深度的变化,并对矢量水听器测量系统获取的南海典型深度上的背景噪声数据进行了分析。结果表明:深海背景噪声声压谱级在500 Hz以下基本上不随深度变化,在500 Hz-3 kHz频段浅深度背景噪声声压谱级略高于较深深度的背景噪声声压谱级;背景噪声的垂直质点振速谱级要小于声压和水平质点振速谱级。
[Abstract]:The combined processing of vector sound pressure and vibration velocity is based on the sound pressure of the signal and the phase of the particle vibration velocity. The influence of ocean environmental boundary on acoustic propagation will change the amplitude and phase characteristics of sound pressure and particle velocity in vector sound field. In this paper, the vector normal wave theory is used to estimate the sea surface according to the environmental conditions of the South China Sea and the measurement of underwater target radiation noise. The amplitude and phase of the vector field of incoherent dipole noise source and underwater point sound source vary with depth. The background noise data of typical depth in the South China Sea obtained by vector hydrophone measurement system are analyzed. The results show that the sound pressure spectrum level of deep sea background noise basically does not change with the depth below 500 Hz. The spectral level of sound pressure of shallow depth background noise in 500 Hz-3 kHz band is slightly higher than that of deeper background noise, and the vertical particle velocity spectrum level of background noise is smaller than that of sound pressure and horizontal particle velocity.
【作者单位】：大连测控技术研究所;
【基金】：国防基础科学研究基金资助(41303080205)
【分类号】：P733.22

【相似文献】