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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

  • 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.

     

    Abstract: 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.

     

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