【摘要】 盲波束形成算法可以在不知道阵的流型、信号及干扰方位的情况下,仅根据各阵元接收的数据恢复信号。由于水声信号为宽带信号,为了充分利用宽带信息,提出利用频域分解的方法获得满足窄带条件的信号,并利用窄带盲波束形成JADE(Joint Approximate Diagonalisation of Eigen-matrices)算法进行处理。对宽带盲波束形成算法进行了理论推导和仿真实验。研究结果表明,盲波束形成算法相对于常规波束形成在信号恢复方面有优越性。更多还原

【Abstract】 The desired signals can be reconstructed from the received sonar data without prior information by the blind beam-forming technique.In order to make full use of wide-band information,frequency decomposition technique is raised to get narrow-band signal from broadband signal.Then blind beam-forming algorithm named JADE is utilized to process the signal acquired.In this paper the algorithm is proved theoretically and examined through simulated data.Results show validity of the assumption.The blind beam-forming algorithm outperforms the conventional one.更多还原