亚健康脉象信号的非参数化双谱估计

根据脉象信号的非高斯随机特性,应用双谱估计对其进行分析,提取处于亚健康状态的脉象信号的异常信息,探索亚健康的诊断与治疗评估的客观诊断依据.在信号处理过程中,双谱的相位携带有信号的重要特征信息.采用双谱估计分析法中的非参数化算法对脉象信号进行研究发现,处于亚健康状态的双谱幅值谱峰比处于健康状态的更突出,较大双谱值的分布更为集中.实验结果表明:非参数化双谱估计是分析脉象信号的有效且可行的方法,可以作为识别亚健康状态的方法进行深入研究.

Nonparametric bispectrum estimation for pulse signals of sub-health

According to non-Gaussianity and randomness of the pulse signals, the bispectrum estimation is used to ana1yze the signals for the purpose of extracting the unusual information of the signals of the sub-health and providing the objective judgment basis to the initial diagnosis and treatment of the sub-health. The phase of bispectrum carries the important feature information in signal processing. Using the nonparametric bispectrum estimation to analyze the subhealth, it is found that in sub-healthy state of ...