一种改进的基于矢量水听器阵列的相干信号方位估计  

An improved method of coherent signals DOA based on vector hydrophone array

作　　者：叶利民[1] 邓大新[2] 

机构地区：[1]海军工程大学研究生院,武汉430033 [2]海军工程大学兵器工程系,武汉430033

出　　处：《海军工程大学学报》2011年第2期90-93,共4页Journal of Naval University of Engineering

摘　　要：为了对相关信号源进行方位估计,针对矢量水听器均匀线列阵,Rahamim提出了一种方法,即将测量数据按同一类型水听器进行排列,但该方法只能实现相干信号的一维方位估计,且存在180°模糊。为此,提出了一种改进方法,即将测量数据按同一阵元位置进行排列,采用前后向空间平滑技术。这样不但能实现相干信号的二维方位估计,而且无180°模糊。仿真实验结果证明了该方法的优越性。In order to discern coherent signals, Rahamim has proposed a method for vector hydrophone uniform line array--the method of arranging measured data according to the same type of hydrophones, but only one-dimension spatial spectrum can be estimated with ambiguity. According to the same array location, an improved method of arranging measured data was presented. By adopting the forward-backward spatial smoothing technique, the two dimension direction of arrive （DOA） can be not only estimated, but also without ambiguity. The simulation results show that the method is effective.

关 键 词：矢量水听器阵 阵列信号处理 相干信号 空间谱 前后向空间平滑技术 

分 类 号：TN911.7[电子电信—通信与信息系统]