| 一种新的时变参数AR模型分析方法 |
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| 引用本文： | 张海勇,马孝江,盖强.一种新的时变参数AR模型分析方法[J].大连理工大学学报,2002,42(2):238-241. |
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| 作者姓名： | 张海勇 马孝江 盖强 |
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| 作者单位： | 1. 大连理工大学,振动工程研究所,辽宁,大连,116024;大连舰艇学院,指控信息系,辽宁,大连,116018
2. 大连理工大学,振动工程研究所,辽宁,大连,116024 |
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| 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型分量，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。
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| 关 键 词： | 时变参数AR模型 局域波分解 时频分析 非平稳信号 信号分析 时变参数模型分析法 |
| 文章编号： | 1000-8608(2002)02-0238-04 |
A new method for time-varying AR model |
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| ZHANG Hai\|yong ,MA Xiao\|jiang ,GAI Qiang.A new method for time-varying AR model[J].Journal of Dalian University of Technology,2002,42(2):238-241. |
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| Authors: | ZHANG Hai\|yong MA Xiao\|jiang GAI Qiang |
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| Institution: | ZHANG Hai\|yong 1,2,MA Xiao\|jiang 1,GAI Qiang 1,2 |
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| 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. |
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| Keywords: | AR model/local wave decomposition time\|frequency analysis nonstationary signal |
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