用于混沌信噪分离的Neymark分解法的适用性研究  

Research on Availability of Neymark Decomposition Applied to Separated Chaos Signal from Noise

作　　者：王一清[1] 黄惟一[1] 段江海[1] 宋爱国[1] 

机构地区：[1]东南大学仪器科学与工程系,南京210096

出　　处：《数据采集与处理》2003年第4期393-397,共5页Journal of Data Acquisition and Processing

基　　金：国家自然科学基金 ( 69875 0 0 4)资助项目

摘　　要：从几何投影的角度阐述了 Neymark分解的空间物理意义 ,并用能量分布的观点解释了该方法实现噪声抑制的内在机理 ,然后通过几个典型的混沌信号在不同类型的噪声背景下的处理结果 ,说明了 Neymark分解法在实现混沌信号与噪声分离时的局限性 ,指出了该方法的噪声抑制效果与目标信号和背景噪声在嵌入相空间中能量分布状况之间的关系 ,最后在此基础上总结出了空间投影类方法实现信噪分离的适用范围 。From the view of geometrical projection, the physical significance of Neymark decomposition is described and its internal denoising mechanism is clarified by the standpoint of energy distribution. By dealing with some typical chaos signals in varied noise background, the limitation of using Neymark to reduce noise is explained and the relationship between the effectiveness of denoising by Neymark and energy distribution of target signal and background noise in embedded phase space is pointed out. Finally, based on the simulational result, the application scope of such kind of space projection method is summarized and a foundation of choosing appropriate method for processing chaos signal is provided.

关 键 词：信号处理 混沌 信噪分离 Neymark分解法 适用性 混沌信号 

分 类 号：TN911.7[电子电信—通信与信息系统]