深海垂直阵直达声区目标反卷积定位方法

Target localization for deep-sea vertical line array in the direct-arrival zone using deconvolution method

深海声源定位的常规方法通常是利用水听器阵列接收声源信号的多途到达信息与仿真结果进行匹配实现定位。针对常规方法难以直接提取相近多途到达角的问题,提出了一种基于反卷积的深海垂直阵水下目标定位方法。该方法采用自适应迭代的频域Richardson-Lucy算法对深海声源目标多途到达角进行直接估计,通过匹配声场到达角特征模板实现测距与定深。仿真和实验结果表明,该定位方法比常规方法有着更高的定位精度与适用性,并且具有较高的计算效率。

The conventional method of deep-sea acoustic source localization is usually to use the multi-path arrival information of the acoustic source signals received by hydrophone arrays to match with the simulation results to achieve localization.Aiming at the problem that it is difficult to extract the similar multi-path arrival angle directly by the conventional method,a deconvolution positioning method for deep-sea vertical array underwater target is proposed.By using this method,not only the adaptive iterative frequency-domain Richardson-Lucy algorithm is used to directly estimate the multipath angle of arrival of deep-sea acoustic targets,but also the ranging and depth fixing are realized by matching the sound field angle of arrival feature template.Simulation and experimental results show that this positioning method has higher localization accuracy and applicability than the conventional method,and has high computational efficiency.