【摘要】 压差式矢量水听器是现有侦察声纳体制之一，但是其角度测量原理假设阵元间隔远小于波长，严重地影响了测角精度，因此需要对压差式矢量水听器的角度测量方法进行改进。提出两种角度测量的改进方法，一是压差矢量幅比反函数多项式拟合方法，通过对压差矢量幅度比与角度函数的反函数多项式逼近，利用压差矢量幅度比估计角度；二是比相测角信息融合方法，利用余弦偶极子和正弦偶极子分别进行比相测角，采用角度的预估值确定融合比，对两个比相结果进行信息融合。仿真结果验证了两种改进方法的有效性。更多还原

【Abstract】 The differential pressure vector hydrophone is one of the existing reconnaissance sonar systems. Its angle measurement principle assumes that the array element distance is far less than the signal wavelength,which seriously affects the accuracy of angle measurement. Therefore,it is necessary to improve the angle measurement method of the differential pressure vector hydrophone. Two improved methods of angle measurement are proposed in this paper. The first is the inverse polynomial fitting method of differential pressure vector amplitude ratio,which estimates the angle by using the inverse polynomial approximation of differential pressure vector amplitude ratio and angle function. The second is the information fusion method of phase comparison and angle measurement. The cosine dipole and sine dipole are used for phase comparison and angle measurement respectively,and the fusion ratio is determined by the estimated value of the angle to fuse the two-phase comparison results. The simulation results verify the effectiveness of the two proposed methods.更多还原