中国物理B ›› 2011, Vol. 20 ›› Issue (2): 20505-020505.doi: 10.1088/1674-1056/20/2/020505
游荣义, 黄晓菁
You Rong-Yi(游荣义) and Huang Xiao-Jing(黄晓菁)†
摘要: In view of the disadvantages of the traditional phase space reconstruction method, this paper presents the method of phase space reconstruction based on the wavelet decomposition and indicates that the wavelet decomposition of chaotic dynamical system is essentially a projection of chaotic attractor on the axes of space opened by the wavelet filter vectors, which corresponds to the time-delayed embedding method of phase space reconstruction proposed by Packard and Takens. The experimental results show that, the structure of dynamical trajectory of chaotic system on the wavelet space is much similar to the original system, and the nonlinear invariants such as correlation dimension, Lyapunov exponent and Kolmogorov entropy are still reserved. It demonstrates that wavelet decomposition is effective for characterizing chaotic dynamical system.
中图分类号: (Nonlinear dynamics and chaos)