J4 ›› 2009, Vol. 27 ›› Issue (02): 127-.

• 论文 • 上一篇    下一篇

抑制维格纳分布交叉干扰项的联合算法

高宪军,陈 超,张 杰,张 卓   

  1. 空军航空大学 航空电子工程系,长春 130022
  • 出版日期:2009-03-20 发布日期:2009-07-06
  • 通讯作者: 高宪军(1965— ),男,吉林白城人,空军航空大学副教授,硕士生导师,主要从事航空通信导航技术与航空通信侦察技术研究 E-mail:gxj1994@tom.com.
  • 作者简介:高宪军(1965— ),男,吉林白城人|空军航空大学副教授|硕士生导师|主要从事航空通信导航技术与航空通信侦察技术研究,(Tel)86-431-86958628(E-mail)gxj1994@tom.com.

Amelioration Algorithm to Suppress the Cross-Term Interference of WVD

GAO Xian-jun,CHEN Chao,ZHANG Jie,ZNANG Zhuo   

  1. Department of Aviation Electronical Engineering, Aviation University of Air Force, Changchun 130022,China
  • Online:2009-03-20 Published:2009-07-06

摘要:

维格纳分布(WVD:Wigner-Ville Distribution)交叉干扰项的存在,严重地影响了其处理效果。为此,笔者结合交叉干扰项的性质,提出改进算法——基于STFT(Short-Time Fpiroer Tramsfpr)与WVD的联合算法(STFT-WVD)。该联合算法将信号的谱图与维格纳分布作互相关处理,以期达到抑制交叉干扰项的效果。通过理论分析与仿真实验证明,STFT-WVD算法在有效抑制WVD交叉干扰项带来不良影响的同时,保持了WVD较高的时频分辨率,是一种行之有效的WVD改进算法。

关键词: 维格纳分布, 交叉干扰项, 谱图, 联合算法

Abstract:

The WVD(Wigner-Ville Distribution) is an important  method of time-frequency analysis, but the cross-term interference in WVD has a  bad influence.Aiming at the characters of cross-term interference.An amelioration algorithm—united algorithm basted on STFT(Short-Time Fpiroer Tramsfpr) and WVD (STFT-WVD)  was proposed to solving the problem. Between the Spectrogram and WVD of signals, united algorithm makes a cross correlation to achieve an ideal effect. By analyzing and simulating, it is proved that STFT-WVD suppresses the cross-term interference in WVD effectively, and keeps the excellent time-frequency resolution as WVD. So STFT-WVD is an effective amelioration algorithm of WVD.

Key words: wigner-ville distribution (WVD), cross-term interference, spectrogram, united algorithm

中图分类号: 

  • TN911