基于矢量水听器线谱法目标方位估计

Linear Spectrum Method to DOA Estimation Basing on Vector Hydrophone

利用矢量水听器收集到的声压和振速信息,研究基于互谱法分析单目标的强线谱来进行目标方位估计。提出了单线谱法和多线谱法两种目标方位估计方法。其中,在分析多线谱法方位估计时,采用了直接平均和加权平均两种处理方法对多线谱进行处理,旨在提高目标方位估计精度。在原理阐述的基础上,通过仿真和湖试实验进一步分析比较了两种方位估计方法。

The acoustic pressure information and particle velocity information are used to study the direction of the arrival estimation by analyzing strong linear spectrum of the single target basing on cross spectrum method. Two kinds of the direction of arrival estimation methods which are single linear spectrum method and multiply linear spectrum method are put forward. In order to improve the precision of the direction of arrival estimation, the direct average and weighted average are used to process the multiply linear spectrum in analyzing multiply linear spectrum method. Finally, the simulation and lake experiments are used to compare the two methods.