A method of detecting the unpredictability of chaotic signals based on periodic orbit statistics
一种基于周期轨道统计的混沌信号不可预测性强弱的检测方法

A method of detecting the unpredictability of chaotic signals is put forward based on periodic orbit statistics. Chaotic time sequences come from analog circuit and numerical simulation respectively. Hot saddle periodic orbits are found and its regression spectrum and regression frequency are investigated. The results show that the method is adequate for detecting the unpredictability of chaotic systems.