单矢量水听器时空变换技术研究

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。

Research on Time-space Transform Technology Using a Single Vector Hydrophone

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.