计算机应用 ›› 2010, Vol. 30 ›› Issue (8): 2218-2220.

• 网络与通信 • 上一篇    下一篇

抑制Winger-Ville分布交叉项的新方法

赵培洪1,平殿发2,邓兵2   

  1. 1. 烟台海军航空工程学院
    2.
  • 收稿日期:2010-01-18 修回日期:2010-03-06 发布日期:2010-07-30 出版日期:2010-08-01
  • 通讯作者: 赵培洪
  • 基金资助:
    基于chirp-rate调制的混合扩频理论与方法研究

New method to suppress cross-terms of Wigner-Ville distribution

  • Received:2010-01-18 Revised:2010-03-06 Online:2010-07-30 Published:2010-08-01
  • Contact: Zhao PeiHong

摘要: 提出了一种可行的检测Wigner-Ville分布交叉项并将其抑制掉的新方法。Cohen类时频分布之一的Margenau-Hill分布同Wigner-Ville分布一样,拥有众多的优良特性,但它和后者交叉项在时频面上的分布却有天壤之别。于是,根据两种分布交叉项在时频面的特点将交叉项检测出来,进而设计二维遮蔽滤波器将交叉项移除。最后的仿真表明了该方法的可行性。

关键词: Wigner-Ville分布, Margenau-Hill分布, 时频分布, 交叉项

Abstract: A new method was proposed to suppress the cross-terms of Wigner-Ville distribution. First,the cross-terms were detected between the Wigner-Ville and the Margenau-Hill distributions based on the geometry difference of cross-terms representation,then a mask filter was designed to eliminate them. Finally,the results of simulation indicate that this technique is feasible.

Key words: Wigner-Ville Distribution (WVD), Margenau-Hill Distribution (MHD), time-frequency distribution, cross-term