单矢量水听器被动测距方法研究

Research on passive ranging method with single vector hydrophone

提出一种利用单矢量水听器接收信号的相位信息实现目标被动测距的方法。该方法借鉴匹配场被动定位的思想,首先根据简正波声场模型建立匹配模板,然后引入图像处理中的相位相关算法,将目标的相位信息与模板进行匹配,从而得到目标的距离。对该方法的有效性与稳健性进行了详细地研究与分析。仿真结果表明,该方法可以有效地实现目标的被动测距,且具有稳健性强、计算速度快、不需要考虑阵型姿态失配等优点,是声呐信号处理的新途径,为实际的工程应用奠定了理论基础。

A method using the phase information of the received signal of single vector hydrophone to realize passive ranging is proposed in this paper. The thought of matched field passive localization is referenced. Firstly,the matching template is established according to the sound field model of normal wave,and then the phase correlation algorithm in image processing is introduced,which is used to match the phase information of the target and the template to get the target distance. The validity and robustness of the method are studied and analyzed in detail. Simulation results show that the proposed method can effectively realize the passive ranging of the target and has a lot of advantages,such as strong robustness,fast calculation speed,and not requiring to consider the array attitude mismatch. The method is a new way of sonar signal processing,which lays the theoretical foundation for the actual engineering application.