QIU Tianshuang   

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Language:English

Paper Publications

Title of Paper:分数低阶α稳定分布噪声下EP潜伏期变化韧性自适应检测

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Date of Publication:2003-08-10

Journal:大连理工大学学报

Included Journals:PKU、ISTIC

Volume:43

Issue:4

Page Number:505-510

ISSN No.:1000-8608

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

Abstract:依据分数低阶矩理论和信号噪声的特性,提出了一种自适应检测EP潜伏期变化的新方法. 这种方法基于反正切函数的单调有界和奇对称特性,对误差信号en(k)进行非线性变换,抑制了EP信号中的分数低阶α稳定分布噪声,有效保留了信号成分,在高斯和分数低阶α稳定分布噪声条件下具有良好的韧性,且避免了动态估计信号噪声α参数的困难. 利用这种方法动态检测EP潜伏期的变化,具有较高的估计精度和较快的收敛速度.

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