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根据矢量水听器的接收指向特性,对单矢量水听器接收的声压和质点振速信息进行处理并组成多阶联立方程组,采用优化算法解方程组获取多目标方位和声源强度的最优值。试验结果表明:该方法能够从时域上对相互间隔大于30°的3个目标进行方位分辨。方位估计的精度受目标方位间距的影响,当目标方位间距大于30°时,方位估计的绝对误差均值小于5°。
According to the receiving directional characteristics of vector hydrophone, the sound pressure and particle velocity information received by a single vector hydrophone are processed and composed of multi-order simultaneous equations. The optimal algorithm is used to solve the equations to obtain multi-target azimuth and sound source intensity The optimal value. Experimental results show that this method can detect the azimuths of three targets that are more than 30 ° from each other in time domain. The accuracy of azimuth estimation is affected by the azimuth of target azimuth. When the azimuth of target azimuth is greater than 30 °, the absolute value of azimuth estimation error is less than 5 °.