声矢量传感器目标方位估计

对偶极子型声矢量传感器应用于水声目标方位估计的信号处理方法进行了分析和研究,
并采用傅立叶分解方法,将一般的窄带信号偶极子定向处理方法推广到宽带,推导出了相应的处理算法. 经计算机模拟计算,在特殊角度用波束旋转后,方位估计精度一般高于2°,海上试验也验
证了本文方法的有效性.
关键词: 偶极子;矢量传感器;方位估计;水声
Abstract : 　The application of dipole acoustic vector sensor to estimate the direction of arrive (DOA) signal was studied. The acoustic vector sensor signal processing of narrow2band was developed to wide2band pro2 cessing by the application of discrete Fourier transform. Methods used in determining DOA were derived. The computer simulation indicates that the estimation precision of DOA is mostly higher than 2°. The effi2 ciency of acoustic vector sensor signal processing algorithms are also demonstrated by the direction estimation of real underwater acoustic targets.
Key words : 　dipole ; vector sensor ; direction estimation ; underwater acoustic