疏浚船水下违规抛泥行为的声学检测方法
发布时间：2018-09-11 21:50
【摘要】：针对港口疏浚驳船存在违规抛泥现象,提出一非接触式检测方案,以Chirp信号作为探测信号,利用希尔伯特黄变换提取探测信号成分,进而获取信号特定频段的能量熵特征.通过对"无抛泥"和"抛泥"两种状态下的接收信号进行分析,得到两者希尔伯特边际谱的能量熵具有明显的差异,以此作为疏浚驳船抛泥行为的检测.在不同场景条件下进行大量的数据仿真分析发现,无抛泥情况下误检概率0%,抛泥情况下漏检概率在6%以下,该方案具有良好的稳定性和可行性.
[Abstract]:In view of the phenomenon of illegal dredging barges in port, a non-contact detection scheme is proposed, in which the Chirp signal is used as the detection signal and the Hilbert Huang transform is used to extract the detection signal components, and then the energy entropy characteristics of the specific frequency band of the signal are obtained. By analyzing the received signals of "no mud" and "mud throwing", it is found that the energy entropy of Hilbert's marginal spectrum is obviously different between them, which can be used as the detection of dredging barges' mud throwing behavior. A large number of data simulations under different scenarios show that the probability of false detection is 0 in the case of no mud throwing and the probability of leakage in the case of throwing mud is less than 6%. The scheme has good stability and feasibility.
【作者单位】： 水声通信与海洋信息技术教育部重点实验室(厦门大学);厦门港口管理局安全监督与科技信息化处;
【基金】：福建省交通运输科技发展项目(201437) 国家自然科学基金(61571377,61471308)
【分类号】：U697
[Abstract]:In view of the phenomenon of illegal dredging barges in port, a non-contact detection scheme is proposed, in which the Chirp signal is used as the detection signal and the Hilbert Huang transform is used to extract the detection signal components, and then the energy entropy characteristics of the specific frequency band of the signal are obtained. By analyzing the received signals of "no mud" and "mud throwing", it is found that the energy entropy of Hilbert's marginal spectrum is obviously different between them, which can be used as the detection of dredging barges' mud throwing behavior. A large number of data simulations under different scenarios show that the probability of false detection is 0 in the case of no mud throwing and the probability of leakage in the case of throwing mud is less than 6%. The scheme has good stability and feasibility.
【作者单位】： 水声通信与海洋信息技术教育部重点实验室(厦门大学);厦门港口管理局安全监督与科技信息化处;
【基金】：福建省交通运输科技发展项目(201437) 国家自然科学基金(61571377,61471308)
【分类号】：U697
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