基于压差式矢量水听器的多目标分辨

矢量水听器是一种既能测量声场中的声压信息,又能测量声场中的振速信息的换能器.矢量特性使得单个矢量水听器就可以实现信号的方位估计,但是传统的矢量水听器处理方法只是利用了信息量增加这一优点,因而提出了一种利用单个压差式矢量水听器进行非相关目标方位估计方法,该方法有效利用声场中声压和质点间振速之间的互相关性,仿真和测试结果表明该方法能有效地进行双目标分辨.

Multi-Signal Distinguish Based on Pressure-Gradient Vector Transducer

Vector transducer can provide velocity information of the incident wavefield besides of the pressure.Due to this characteristic,the direction of arrival(DOA) can be estimated from single vector transducer.But in traditional signal processing of vector transducer,only advantage of more information is considered.A new method using the correlation of pressure and particle velocity to estimate DOA of uncorrelated signal by single pressure-gradient vector transducer is presented.Results of simulation experiment and lake experiment show that the proposed method can distinguish double uncorrelated signal correctly and efficiently.