基于单矢量水听器的实时性线谱提取算法  

Real-time line spectrum extraction algorithm based on single vector hydrophone

作　　者：袁猛 禚江浩 孙芹东 吕勇 刘刚 YUAN Meng;ZHUO Jiang-hao;SUN Qin-dong;LV Yong;LIU Gang(Navy Submarine Academy,Qingdao 266199,China;Qingdao National Laboratory for Marine Science and Technology,Qingdao 266237,China)

机构地区：[1]海军潜艇学院,山东青岛266199 [2]青岛海洋科学与技术国家实验室发展中心,山东青岛266237

出　　处：《舰船科学技术》2023年第6期129-132,共4页Ship Science and Technology

基　　金：国家重点研发计划资助项目(2021YFC3100900)。

摘　　要：针对单矢量水听器探测条件下的水声目标线谱提取问题,提出一种可实时性迭代计算的线谱提取算法。首先利用矢量水听器声压振速通道的联合信息处理,可提高水声目标信号的信噪比。其次,利用基于极大值滤波器的线谱预处理方法对信号频谱进行峰值检测,进而通过在线谱提取过程中引入缓存器,可以在较小的计算复杂度条件下提高信号处理过程中的时间增益,再结合线谱归并方法可以较为精确的提取出目标线谱。经仿真试验分析及海上实测数据验证,该算法能够在低信噪比条件下实现对线谱的检测,并具有良好的抗线谱漂移干扰能力。Aiming at the problem of line spectrum extraction of underwater acoustic targets based on single-vector hydrophone,a line spectrum extraction algorithm with real-time iterative output is proposed.Firstly,by combining the sound pressure information and vibration velocity information of the vector hydrophone,the signal-to-noise ratio of the signal is improved.Secondly,the peak detection of the signal spectrum is carried out using the line spectrum preprocessing method based on the maximum filter.Then,by introducing a cache during the line spectrum extraction process,the time gain of the signal can be improved at a small computational cost,and the line spectrum can be more accurately extracted by combining the line spectrum merge method.The algorithm is verified by the simulation data and the ship sounds that measured at sea,which proves that the algorithm can detect the line spectrum under the condition of low signal-to-noise ratio,and has a good ability of resisting line spectrum drift interference.

关 键 词：线谱提取 实时性算法 单矢量水听器 缓存器 最大值滤波器 

分 类 号：O427[理学—声学]