超波束处理方法的快速实现及试验验证  

Fast implementation of hyper beam method and its performance evaluation

作　　者：王永丰[1] 王昭辉[2] 

机构地区：[1]中国科学院声学研究所,北京100190 [2]康涅狄格大学电子与计算机工程系,美国康涅狄格州06269

出　　处：《声学技术》2012年第5期522-525,共4页Technical Acoustics

摘　　要：提出了超波束处理方法在主动声纳中的快速实现方法。通过对阵元信号进行下变频降采样,并采用阵元信号先匹配滤波再波束形成的步骤,降低了信号处理的计算复杂度,使超波束处理方法易于在实时信号处理系统上实现。使用湖试数据处理结果验证了实现方法的正确性,并对超波束处理方法的性能进行了比较。A fast implementation of the hyper-beamforming method is proposed.Rather than performing the hyper-beamforming with the received signal directly,we first downshift the received signal from passband to sideband,and pass the sideband signal through a matched filter operating at a lower sampling rate.The hyper-beams are then formed by using the matched filter output.Compared with traditional implementation of the hyper-beamforming method,the proposed method enjoys less computational complexity,hence the easiness to implement in the real systems.Extensive lake-trial results are presented to validate the performance of the proposed method.

关 键 词：超波束 波束形成 匹配滤波 

分 类 号：TN911.7[电子电信—通信与信息系统]