| 基于双线性时间-频率分布的瞬时信号探测技术 |
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| 引用本文： | 余红英,樊永生.基于双线性时间-频率分布的瞬时信号探测技术[J].测试技术学报,2006,20(2):123-127. |
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| 作者姓名： | 余红英 樊永生 |
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| 作者单位： | 1. 中北大学,自动控制系,山西,太原,030051
2. 中北大学,自动控制系,山西,太原,030051;北京航空航天大学,宇航学院,北京,100083 |
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| 摘 要： | 针对复杂背景条件下瞬时信号的探测,提出一种新的无混叠双线性时间-频率分布方法,该方法能够避免常用的双线性时频分布中的频率混叠与信息丢失,有效减小交叉项干扰,而且具有较高的时频分辨率.通过数字模拟实验与齿轮箱故障信号检测,验证了新的双线性时间-频率分布对复杂信号中瞬时分量的探测效果.
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| 关 键 词： | 双线性时间-频率分布 信号探测 瞬时信号 核函数 |
| 文章编号： | 1671-7449（2006）02-0123-05 |
| 收稿时间： | 2005-01-07 |
| 修稿时间： | 2005年1月7日 |
Transient Signal Detection Technology Based on Bilinear Time-Frequency Distribution |
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| YU Hong-ying,FAN Yong-sheng.Transient Signal Detection Technology Based on Bilinear Time-Frequency Distribution[J].Journal of Test and Measurement Techol,2006,20(2):123-127. |
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| Authors: | YU Hong-ying FAN Yong-sheng |
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| Abstract: | To detect transient signals under complex background, a novel method of aliasing-free exponential bilinear time-frequency distribution is presented in this paper, which can avoid the frequency aliasing and information loss existing in the traditional bilinear distributions, reduce the cross-terms effectively and possess high time-frequency resolution. By digital simulation and detection of gearbox fault signal the detection effect of the novel bilinear time-frequency transform is validated for the transient components in complex signal. |
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| Keywords: | bilinear time-frequency distribution signal detection! transient signal kernel function |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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