【摘要】 在被动声探测设备中声传感器阵对舰船目标宽带噪声源的精确定向取决于时延估计的精度,针对这一问题,将自适应参量模型算法与变步长的LMS算法相结合,提出了一种可高精度估计任意时延,且收敛速度快的时延估计算法。结合舰船辐射宽带噪声,以正四面体声传感器定向阵列为例进行了计算机仿真,仿真结果表明:该方法估计所得的方位角误差小于0.1°,俯仰角误差小于1°,实现了对舰船目标宽带噪声源的精确定向,具有很好的工程实用价值。更多还原

【Abstract】 In the passive acoustic detection equipment,accurate direction of the acoustic sensor array for ship target broadband noise source depends on the accuracy of time delay estimation,in order to solve this problem,adaptive parameter model algorithm is combined with the variable step size LMS algorithm,a high precision estimation for any delay and rapid convergence speed of the estimation algorithm is proposed.Computer simulations are presented for the tetrahedral acoustic sensor array and ship broadband noise.The simulation results show that,the azimuth error is less than 0.1°,the pitch angle error is less than 1°,which can achieve an accurate direction on the ship target broadband noise source,and have good practical value.更多还原