海面噪声场条件下声压与振速的空间互相关函数

Pressure and Particle Velocity Spatial correlation Function in Sea Surface Generated noise field

介绍了海面噪声场条件下的声压与质点振速的时空相关函数。论证了海面噪声场垂直与水平方向噪声的各向异性程度。结果表明,在垂直于海平面的方向上,噪声场表现为各向异性;在与海面的水平方向上,噪声场表现为各向同性。结果表明,各向同性噪声场条件下基于矢量水听器被动检测的声纳系统目标水平方位角估计是基本可靠的,但垂直方位角的计算需要修正。

In this article, the time-space correlation function of acoustic pressure and particle velocity in the sea surface noise field are introduced. Anisotropic degree of horizontal direction and vertical direction in the sea surface noise field are discussed. Anisotropic component of noise are presented in the vertical direction of sea surface. Isotropic component of noise are presented in the horizontal direction of sea surface. The result is： estimation of horizontal Arrival of Direction （DOA） of sources based on the theory of vector sensor passive detection is correct. But estimation of vertical Arrival of Direction （DOA） of sources is must be corrected .