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兵工学报 ›› 2005, Vol. 26 ›› Issue (6): 746-750.

• 论文 • 上一篇    下一篇

匹配场噪声抑制的稳健方法

杨坤德,马远良   

  1. 西北工业大学航海学院声学所,陕西西安710072
  • 收稿日期:2004-04-20 上线日期:2014-12-25
  • 通讯作者: 杨坤德
  • 基金资助:
    国家自然科学基金资助项目(10304015,60472073)

The Robust Approach of Matched Field Noise Suppression

YANG Kun-de, MA Yuan-Iiang   

  1. Institute of Acoustics, College of Maritime, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
  • Received:2004-04-20 Online:2014-12-25
  • Contact: YANG Kun-de

摘要: 由于拖船噪声是一种具有多途角扩展的宽带相干强干扰,拖船噪声抑制是拖线阵声呐系统中的关键技术之一。根据最优传感器阵列处理和匹配场处理的概念,提出两种稳健的匹配场噪声抑制方法:多约束匹配场噪声抑制和匹配场波束形成后噪声抑制。理论与仿真分析均表明,稳健的匹配场噪声抑制方法比常规波束形成器、最小方差无失真响应波束形成器、以及以往的匹配场噪声抑制方法具有更优越的性能。

关键词: 声学 , 水声工程 , 噪声抑制 , 声呐信号处理 , 匹配场

Abstract: Towing ship noise is a kind of wideband interference with strong multi-path and angle dispersion for a towed line array sonar system. Based on the novel concept of matched field noise suppression (MFNS) proposed by the authors, two robust MFNS methods were presented to cancel the towing ship noise. Of them one is mul?tiple constraints MFNS and the other is matched field postbeamformer interference canceller (MF-PIC) . The prominent advantage of the methods is that it can suppress the towing ship’s noise for all arrival directions and keep signal power with robustness. The efficacy of the methods was verified by simulation.

Key words: acoustics , underwater acoustic engineering , noise suppression , sonar signal processing , matched field

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