吉林大学学报(工学版)

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Recovery of weak harmonic signals in chaos

Wang Guo-guang, Wang Shu-xun   

  1. College of Communication Engineering, Jilin University,Changchun 130022,China
  • Received:2005-08-12 Revised:2005-12-17 Online:2006-05-01 Published:2006-05-01
  • Contact: Wang Guoguang

Abstract: A novel method to recover the weak harmonic signals from the measured data contaminated with the chaotic interference was proposed. A new phase space projection method was established to separate the harmonic signals from the strong chaos by combining the phase space reconstruction with the cosine transformation based on the geometry of chaos. The power spectrum estimation was used to extract the frequency of harmonic signals, and the leastsquares procedure was applied to increase the recovery accuracy of the harmonic signals. Computer simulation verified that this method have high stability and reliability in recovering the weak signals in the chaos.

Key words: information processing, recovery of harmonics, cosine transform, chaos, phase space reconstruction

CLC Number: 

  • TN912.34
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