摘要
通过计算小尺度小波变换模数的最大Lyapunov指数,得到离散动力系统的最大Lyapunov指数.结果表明,不同的变换尺度对计算结果影响不同,而选用不同的小波函数对计算结果影响不大.利用小尺度小波变换模数来计算最大Lyapunov指数能有效克服极强的大尺度噪声的干扰.
The largest Lyapunov exponent of a discrete dynamical system can be obtained by calculating the largest Lyapunov exponent of the small-scale wavelet transform modulus of the discrete dynamical system. The results show that the effect of the difference in transformation scale on the calculation result is different and the effect of the difference in wave functions on the results is little. And the calculation of the largest Lyapunov exponent with the small-scale wavelet transform modulus can efficiently eliminate the effect of strong large-scale noise.
出处
《兰州理工大学学报》
CAS
北大核心
2006年第1期158-160,共3页
Journal of Lanzhou University of Technology
基金
甘肃省自然科学基金(ZS022-A25-017)
