基于矢量水听器双基地声呐前向干扰抑制技术

Forward interface restraining technology for bi-static sonar systems based on vector hydrophone

针对双基地声呐系统中存在特殊的直达声及前向散射等前向干扰,提出了矢量水听器在主动声呐系统应用的概念。利用矢量水听器可电子旋转的单边组合指向性,结合姿态传感器可实时抑制强前向干扰。分析并仿真了矢量水听器声压和振速通道灵敏度和相位一致性对干扰抑制效果的影响,为双基地矢量声呐的理论和实验研究奠定了基础。

In view of the special problem of forward interference,including the direct wave and forward scatting in bi-static so- nar systems,the concept of active bi-static sonar systems based on vector hydrophone is proposed. The high power forward in- terface can be restrained in real time by using the electronic rotating single-side directivity of the vector hydrophone andthe in- formation froin the horizontal attitude sensor. The analysis and simulation of the influence of null depth form the channel-to- channel match between the pressure and particle velocity in sensitivity and phase property of the vector hydrophone are given, the results of which establishs a theoretical and practical foundation for design of active bi-static sonar systems.