【摘要】 提出了一种新的非平稳信号的时变参数 AR模型分析方法——局域波分解及其时变参数 AR模型 .该方法先用局域波分解方法把待处理信号分解成有限个基本模式分量 ,再对分解得到的基本模式分量建立时变参数 AR模型 ,从而得出时频平面上的时变参数 AR模型谱 .它扩大了传统的时变参数模型法的应用范围 ,可用于复杂的非平稳信号的分析和处理更多还原

【Abstract】 A new method for time\|varying AR model of analyzing nonstationary random signals is presented. This method is designated as the local wave decomposition and its time\|varying AR model and it includes two procedures. First, using the method of local wave decomposition, a complicated signal is decomposed into a finite and often small number of Intrinsic Mode Functions. Second, a time\|varying AR model is established in any of these Intrinsic Mode Functions, which can obtain their time\|frequency spectrum. The present method enlarges the applying area where available methods for time\|varying parametric model are used, and can analyze complicated nonstationary signals.更多还原