提出了一种基于单矢量水听器的信号处理新技术.方法通过对单矢量水听器各通道时域采样数据进行分解,将单矢量水听器等效虚拟为具有空间孔径的半波均匀直线阵.与单矢量水听器相比,虚拟后的阵列具有更窄的空域指向性波束.利用虚拟阵列的快拍数据可完成对空间目标方位估计,且可对宽带和窄带信号在频率或时域进行处理.新方法无需进行阵列流型的校正,因而具有更强的鲁棒性.理论分析和计算机仿真表明,在各向同性噪声场中,对于窄带或宽带目标,新方法具有比单矢量水听器MUSIC算法更好的方位估计性能.湖上试验验证了算法的有效性.%A new signal processing technology based on single vector hydrophone was proposed. The method equivalently constructs a virtual aperture of a half wavelength distance uniform linear array from a single vector hydrophone by decomposing the time-domain sample data of different channels of the hydrophone. Compared with a single vector hydrophone, the virtual array has a narrower space beam. Azimuth of spatial target can be estimated using the virtual array snapshots for wide-band or narrow-band signal in frequency domain or time domain. The new method is robust for no need of a correction of array manifold. The theoretic amalysis and the computer simulation show that the new algorithm has a better performance of estimating a narrow-band or wide-band signal in the isotropic noise field compared to single vector hydrophone MUSIC algorithm.
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