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| 窄带包络相关在舰船辐射噪声包络谱提取中的应用研究 | |
| 引用本文： | 周超,席泽敏,王静.窄带包络相关在舰船辐射噪声包络谱提取中的应用研究[J].船电技术,2012,32(4):9-11,15. |
| 作者姓名： | 周超 席泽敏 王静 |
| 作者单位： | 1. 91959部队,三亚,572016 2. 海军工程大学电子工程学院,武汉,430033 3. 92081部队,青岛,266109 |
| 摘 要： | 由于舰船辐射噪声的调制不均匀性,在计算包络谱时,不同窄带上的包络谱会有较大差异。文章以窄带包络相关理论为基础,计算舰船辐射噪声的平均窄带包络相关系数曲线,来衡量舰船辐射噪声的非均匀调制特性,以平均窄带包络相关系数曲线的最大值点作为最佳窄带提取包络谱,给出了一种包络谱提取时窄带选择的方法。并对仿真和实录信号进行了窄带包络相关计算和验证研究。结果表明,通过计算平均窄带包络相关系数来选择最佳调制窄带,在包络谱提取中有较好的应用效果。 |
| 关 键 词： | 舰船噪声 窄带包络相关 包络谱提取 |
Research on Application of Narrow-band Envelope Correlation to Envelope Spectrum Extracted of Ship Radial Noise |
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| Zhou Chao,Xi Zemin,Wang Jing.Research on Application of Narrow-band Envelope Correlation to Envelope Spectrum Extracted of Ship Radial Noise[J].Marine Electric & Electronic Technology,2012,32(4):9-11,15. | |
| Authors: | Zhou Chao Xi Zemin Wang Jing |
| Institution: | 1No.91959 Naval force,Sanya 572016,China;2.Naval University of Engineering,Wuhan 430033,China;3.No.92081 Naval force,Qingdao 266109,China) |
| Abstract: | Envelope spectrum with different frequency bands differs for uneven modulation of ship noise.Average narrow-band envelope correlation is computed to weight uneven modulation of ship noise and a method is given to extracted envelope spectrum that referring the max of average narrow-band envelope correlation as the best band.Average narrow-band envelope correlation of simulation and real noise is calculated.The result shows it is efficient to choose optimum modulation band by calculating average narrow-band envelope correlation. |
| Keywords: | Ship Noise Narrow-Band Envelope Correlation Envelope Spectrum Extracted |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |