一种矢量水听器基阵模拟器的设计

A design of the vector-hydrophone array simulator

矢量水听器的每个阵元同时测量声场中声矢量和质点振速的3个分量,相对于声压水听器阵来说,矢量阵获取声场中更多的信息。利用矢量阵所获得速度场的信息可以去除目标方位估计中的 180°模糊。模拟器可以模拟实际海洋环境中目标的辐射特性和噪声特性,应用模拟器可以有效地缩短声纳的研制周期。本文提出一种矢量水听器基阵模拟器的设计方案,该方案解决了矢量阵中宽带信号的90°移相问题、时延精确控制问题和宽带噪声的谱状控制问题。

Each element of vector-hydrophone array measures the acoustic pressure and the three orthogonal components of acoustic particle velocity in a sound field. The advantage of the vector hydrophone over the traditional scalar hydrophone is that the former can obtain mose acoustic informations. Thus the 180° ambiguity in the DOA estimation can be removed using the information of acoustic particle velocity in a sound field. A vector-hydrophone array simulator can generate the target radiated noise and the ambient noise. Its application can effectively shorten the developing cycle of a digital sonar. We present a method to design a vector-hydrophone array simulator. By this method, we can treat the problem of 90° transposition and obtain the high delay accuracy and the frequency spectrum form of the ambient noise.