基于水听器阵的广义相关波束形成算法研究

The Algorithm Research of the Generalized Correlation Beamformer Based on the Array of Hydrophones

传统上都是使用基于常规波束形成(CBF)输出功率的不同进行声源的被动检测和定位。广义相关波束形成,是一种旨在将平均Toep litz相关函数用于估计波束形成的输出功率。从线性矢量水听器阵出发,分析了常规波束形成,对广义相关波束形成(GCBF)进行了深入研究,通过对广义相关波束形成器进行“W ilson”和“Bartlett”加权,可以分别得到FIM(WFIM)和CBF,对这三种波束形成器进行了理论分析和计算机仿真,结果表明三个波束形成器的分辨能力从高到低依次是:FIM、WFIM、CBF。

It is traditional that using the various output power of conventional beamformer （CBF） to carry on passive detection and localization of an acoustic source. The generalized correlation beamformer （GCBF） is proposed where a weighted Toeplitz-averaged correlation function is used to estimate the beamformer output power. For a linear vector array of hydrophones, the CBF is analyzed and the GCBF is investigated detailedly in the paper. The weighted Wilson and Bartlett sequence are used to GCBF, which may deduce FIM （WFIM） and CBF respectively. The three beamformers are analyzed theoretically and simulated by computer, as a result, among the three beamformers,the resolving power of FIM is the highest,the CBF is the lowest.