矢量阵改进常规波束形成

针对常规Bartlett波束形成无法充分发挥矢量阵抗干扰性能的问题,提出基于声压振速联合处理的矢量阵改进Bartlett波束形成方法.推导了该波束形成器的解析表达式,给出其方位谱计算方法,定义了左右舷模糊抑制增益用于分析两种方法单边指向性能.声压振速联合处理能够更好地抑制噪声使得改进方法旁瓣更低、左右舷模糊抑制性能更好...

Improved Bartlett Beam forming for Vector Sensor Array

The traditional Bartlett beamforming based on an acoustic vector sensor array(AVSA) cann’t demonstrate the anti-interference capability of AVSA.To improve its performance,a modified Bartlett direction estimation algorithm based on the AVSA is put forward.The pressure and velocity output of AVSA are processed using the modified method.The calculation process of this algorithm is given.A gain of suppressing left-right ambiguity is defined to analyze the single side directivity of two Bartlett azimuth spectra.The improved algorithm has lower side and better performance of left-right ambiguity suppressing for the combined processing which can suppress a noise more sufficiently.The results of computer simulation and sea experiment show that the improved algorithm is feasible.