| 王仪,许枫,杨娟.强舰船干扰条件下的UUV目标特征稳健提取方法[J].,2025,43(3):685-692 |
| 强舰船干扰条件下的UUV目标特征稳健提取方法 |
| The robust feature extraction method of UUV under strong ship interference condition |
| 投稿时间：2023-11-15 修订日期：2025-05-07 |
| 中文摘要: |
| 针对强舰船干扰条件下UUV螺旋桨边带频率提取困难问题，提出一种基于变分模态分解改进的DEMON谱分析法，用于对UUV螺旋桨转速估计。利用变分模态分解自适应构造的最优维纳滤波，提升抗噪能力的同时代替人为选取DEMON谱分析带通滤波器，进而提取UUV高频辐射噪声中的边带螺旋桨旋转频率。分析了用于UUV特征提取的变分模态分解参数设置，据此参数验证了该方法在实际舰船干扰下对UUV边带频率提取的有效性。并通过仿真验证了改进算法相比于原DEMON谱分析法，在一定信噪比舰船噪声背景下，提取边带线谱的优势。 |
| 英文摘要: |
| In order to solve the problem of side-band frequency extraction of UUV propeller under the condition of strong ship interference, an improved DEMON spectrum analysis method based on variational mode decomposition was proposed to estimate the rotational speed of UUV propeller. The optimal Wiener filter that is structured by variational mode decomposition adaptively is used to instead the DEMON spectral bandpass filter artificially. The improved algorithm can extract the side-band propeller rotation frequency in the high-frequency radiation noise of UUV, and then the rotational propeller speed can be estimated. The actual signals are analyzed to confirm the parameters of variational modal decomposition for UUV feature extraction. Based on this parameter, the effectiveness of the proposed method for UUV side-band frequency adaptive extraction under the interference of ship radiated noise is verified. And simulation is used to verify the advantage of the improved algorithm over the original DEMON spectrum analysis method in extracting side-band frequency, under ship interference with a certain signal-to-noise ratio. |
| DOI：10.11684/j.issn.1000-310X.2025.03.017 |
| 中文关键词: UUV特征提取 变分模态分解 DEMON谱分析 舰船干扰 |
| 英文关键词: feature extraction of UUV Variational Mode Decomposition DEMON spectrum analysis ship interference |
| 基金项目:中国科学院基金 |
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