摘要
通过将混沌伪随机序列看成一个符号序列 ,提出了用符号动力学的方法来分析混沌伪随机序列的复杂度 .以Logistic映射和耦合映射格子系统产生的混沌伪随机序列为例 ,说明了该方法的应用 ,并将计算结果与近似熵ApEn法的计算结果作了比较 .结果表明 ,该方法可以有效地判断出不同的混沌伪随机序列的复杂程度 。
By considering a chaotic pseudo_random sequence as a symbolic sequence, we present a symbolic dynamics approach for the complexity analysis of chaotic pseudo_random sequences. The method is applied to the cases of Logistic map and one_way coupled map lattice to demonstrate how it works, and a comparison is made between it and the approximate entropy method. The results show that this method is applicable to distinguish the complexities of different chaotic pseudo_random sequences, and it is superior to the approximate entropy method.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2004年第9期2877-2881,共5页
Acta Physica Sinica
基金
国家自然科学基金 (批准号 :10 2 760 3 2 )
中国工程物理院联合基金NSAF资助的课题~~
