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.
出处
《海军工程大学学报》
CAS
北大核心
2011年第2期90-93,共4页
Journal of Naval University of Engineering
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
vector hydrophone array
array signal processing
coherent signal
spatial spectrum
for-ward-backward spatial smoothing
