深海环境下利用单矢量传感器估计目标深度

A method for target depth estimation in the deep ocean using a single vector sensor

针对深海环境下目标的深度估计问题,本文研究了可靠声路径下直达波和表面反射波形成的周期性干涉调制模式。提出了一种利用单矢量传感器结合周期干涉调制结构对目标深度估计方法。依据矢量传感器接收到的声场信号构建周期干涉调制结构,利用水平复声强和垂直复声强获得目标的垂直到达角,通过周期干涉调制结构同目标深度之间的关系估计目标的深度。Bellhop数值仿真实验结果表明该方法能够有效估计目标深度,并且不需要精确的海洋环境知识。

To solve the problem of target depth estimation in deep-sea environments,this paper explores the periodic interference modulation pattern formed by direct and surface-reflected waves within a reliable acoustic path.In this paper,a novel target depth estimation method using a single vector sensor combined with this periodic interference modulation structure is proposed.The periodic interference structure is constructed by the sound field signals received by the vector sensor.The vertical angle of arrival of the target is determined using the horizontal complex sound intensity and the vertical complex sound intensity.The target depth is estimated based on the relationship between the periodic interference modulation structure and the target depth.Bellhop numerical simulation results validate the effectiveness of this method,highlighting that it does not require accurate ocean environmental knowledge.