王永丰,王昭辉.超波束处理方法的快速实现及试验验证[J].声学技术,2012,(5):522~525 |
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 |
投稿时间:2011-09-28 修订日期:2011-11-01 |
DOI:10.3969/j.issn1000-3630.2012.05.015 |
中文关键词: 超波束 波束形成 匹配滤波 |
英文关键词: hyper-beam beamforming matched filter |
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中文摘要: |
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. |
英文摘要: |
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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