Forward scattering detection of a submerged moving target based on adaptive filtering technique.
Forward scattering detection of a submerged moving target based on adaptive filtering technique.
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DOI：
10.1121/1.4929807
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发表时间：
2015-09
期刊：
影响因子：
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通讯作者：
Chuanlin He;Kunde Yang;Bo Lei;Yuanliang Ma
中科院分区：
文献类型：
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作者：
Chuanlin He;Kunde Yang;Bo Lei;Yuanliang Ma
当水下目标穿过源-接收线时，前向散射波总是被强烈的直接爆炸所淹没。提出了一种称为基于自适应滤波的直接爆炸抑制(DBS-AF)的处理方案来抑制此类爆炸。利用垂直水听器阵列和10 kHzCW脉冲在湖中进行了验证实验。处理结果表明，直接冲击波在单个通道上被抑制，并通过探测曲线上的波瓣识别入侵目标。通过在阵列上采用延时波束形成器作为预处理技术，提高了检测性能。
Forward scattered waves are always overwhelmed by severely intense direct blasts when a submerged target crosses the source-receiver line. A processing scheme called direct blast suppression based on adaptive filtering (DBS-AF) is proposed to suppress such blasts. A verification experiment was conducted in a lake with a vertical hydrophone array and 10 kHz CW impulses. Processing results show that the direct blast is suppressed in a single channel, and an intruding target is identified by the lobes in the detection curve. The detection performance is improved by adopting a time-delay beam-former on the array as a pre-processing technique.