QIU Tianshuang   

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Language:English

Paper Publications

Title of Paper:基于分数低阶谱图的非平稳信号时延估计

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Date of Publication:2016-06-15

Journal:大连交通大学学报

Included Journals:ISTIC

Volume:37

Issue:3

Page Number:112-116

ISSN No.:1673-9590

Key Words:时间延迟;非平稳;分数低阶;谱图

Abstract:依据分数低阶统计量理论,讨论了分数低阶短时Fourier变换、分数低阶谱图等时频表示方法在非高斯FLOA噪声环境下的适用性.针对传统时间延迟估计方法在非高斯非平稳环境下的退化现象,提出一种基于分数低阶谱图的非平稳信号时间延迟估计新方法.理论分析和仿真实验结果表明,新方法同时适用于高斯和非高斯FLOA噪声环境下的非平稳信号时间延迟估计,具有良好的韧性.

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