| 基于实值离散Gabor变换的阶比跟踪滤波 |
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| 引用本文： | 程利军,张英堂,李健伟,孙宜权,尹刚.基于实值离散Gabor变换的阶比跟踪滤波[J].军械工程学院学报,2012(3):65-68. |
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| 作者姓名： | 程利军 张英堂 李健伟 孙宜权 尹刚 |
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| 作者单位： | [1]军械工程学院火炮工程系,河北石家庄050003 [2]72502部队,山东济南250003 |
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| 摘 要： | 提出了基于实值离散Gabor变换的阶比跟踪滤波方法．分析了阶比跟踪滤波为时频滤波的实质，给出了如何通过实值离散Gabor变换实现阶比跟踪滤波的步骤．通过对仿真信号阶比跟踪滤波前后的时频分布、阶比谱和时域信号对比，证实本方法能有效滤除阶比混叠成分．通过延长信号两端采样长度的方法可以消除阶比跟踪滤波后端点的误差．
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| 关 键 词： | 旋转机械 阶次跟踪 Gabor变换 阶比跟踪滤波 等角度采样 |
Order Tracking Filtering Based on Real-Valued Discrete Gabor Transform |
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| CHENG Li-jun,ZHANG Ying-tang,LI Jian-wei,SUN Yi-quan,YIN Gang.Order Tracking Filtering Based on Real-Valued Discrete Gabor Transform[J].Journal of Ordnance Engineering College,2012(3):65-68. |
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| Authors: | CHENG Li-jun ZHANG Ying-tang LI Jian-wei SUN Yi-quan YIN Gang |
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| Institution: | 1. Department of Artillery Engineering, Ordnance Engineering College, Shijiazhuang 050003, China; 2. Unit 72502, Jinan 250003, China) |
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| Abstract: | An order tracking filtering method based on real-valued discrete Gabor transform is put forward. Order tracking filter＇s essential is time frequency filter, the process of use real-valued discrete Gabor transform to achieve order tracking filtering is described. Through comparing the time-frequency distribution,order spectrum and time domain signal of simulation signal before and after order tracking filtering, we find that this method can efficiently eliminate the alias order component. Through extending the signal,the order tracking filter error at signal＇s start and end point can be eliminated. |
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| Keywords: | rotating mechanism order tracking Gabor transform order tracking filter uniform angle sampling |
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