基于单矢量水听器的两种方位估计方法

Two DOA Estimation Approaches Based on a Single Vector Hydrophone

单矢量水听器能同时检测声场的声压和振速信息，可以估计目标方位，相比于常规声压水听器有很多优势。分析了加权平均法和平均声能流法两种定向算法的物理基础及优缺点，并用两种方法处理了某海域海上实验数据。两种算法的处理结果高度吻合，证明了两种算法的正确性和实用性。实验结果表明加权平均法可同时探测多个目标，而平均声能流法仅适用于单目标的情况，但运算量小。

A single vector hydrophone can get the pressure and velocity of the sound field at one time, so it can be used in DOA estimation. Two kinds of approaches are introduced in this paper and also are used in the trial in sea. The results of two approaches totally agree with each other. The experiment results show that the method of weighted average can be used in the field of muhi-target detection, while the method of average sound energy flux can only be taken when there is just one target, but the latter one needs less computational cost.