QIU Tianshuang   

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Language:English

Paper Publications

Title of Paper:基于共变谱的CZT多源时延估计新方法

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Date of Publication:2007-09-15

Journal:大连理工大学学报

Included Journals:Scopus、EI、PKU、ISTIC、CSCD

Volume:47

Issue:5

Page Number:746-750

ISSN No.:1000-8608

Key Words:α稳定分布;CZT;分数低阶统计量;时延估计

Abstract:针对现实环境中经常出现的强脉冲、非高斯噪声,以α稳定分布作为噪声模型,研究了被动系统中的多源时延估计问题.同时考虑到α稳定分布噪声会降低基于二阶统计量的传统方法的性能,依据分数低阶统计量理论并引入线性调频Z变换(CZT),提出了一种脉冲噪声环境条件下的多源时延估计新方法,仿真表明该方法可有效解决脉冲噪声环境中多源时延估计的高精度问题,其性能优于常用的共变法.

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