哈尔滨工业大学电子工程技术研究所,黑龙江,哈尔滨,150001
纸质出版:2008
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王勇, 姜义成. 一种抑制时频分布交叉项的新方法[J]. 电子学报, 2008,36(S1):161-165.
WANG Yong, JIANG Yi-cheng. A New Method for Restrain the Cross-terms of Time-Frequency Distributions[J]. Acta Electronica Sinica, 2008, 36(S1): 161-165.
提出一种抑制时频分布交叉项的新方法
该方法在Wigner-Ville分布(WVD)的基础上
引入一相位校正函数
可抑制信号的非线性导致的自交叉项影响.对于多分量信号
文中采用洁净(CLEAN)技术对每个信号分量进行带通滤波
抑制了信号分量间的互交叉项影响.该方法在抑制时频分布交叉项的同时
保持着较高的时频聚集性
计算机仿真实验验证了本文算法的有效性.
A new method for restrain the cro ss terms of time frequency distributions is presented.By introducing a phase adjust function(PAF)based on the WVD
this method can restrain the cross terms induced by the nonlinear character of the signal.And for multi-component signal
the CLEAN technique is adopted to filter out each component by a band pass filter
and the cross terms between the components are restrained.At the same time
this method has a high time frequency convergency
the simulated results demonstrate the validity of it.
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