QIU Tianshuang   

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Language:English

Paper Publications

Title of Paper:一种基于非线性变换的EP潜伏期变化自适应检测方法

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Date of Publication:2002-12-15

Journal:电子与信息学报

Included Journals:Scopus、ISTIC、CSCD

Volume:24

Issue:12

Page Number:1842-1849

ISSN No.:1009-5896

Key Words:诱发电位;潜伏期;自适应检测;α稳定分布噪声;分数低阶矩;非线性变换

Abstract:该文依据分数低阶矩理论和诱发电位(EP)信号及噪声的低阶α稳定分布特性,提出了一种自适应检测EP潜伏期变化的新方法.这种方法基于sigmoid函数对误差信号en(κ)进行连续的非线性变换,既抑制了EP信号中的低阶α稳定分布噪声,又有效保留了信号成分,在高斯和低阶α稳定分布噪声条件下具有很好的韧性,且无须动态估计信号噪声的α参数.利用这种方法动态检测EP潜伏期的变化,比以往的DLMS,DLMP和SDA等算法具有较高的估计精度和较快的收敛速度,是一种具有较高韧性的性能优良的EP潜伏期变化动态检测方法.

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