QIU Tianshuang   

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Language:English

Paper Publications

Title of Paper:脉冲噪声环境下宽带循环平稳信号DOA估计算法

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Date of Publication:2012-07-15

Journal:数据采集与处理

Included Journals:Scopus、PKU、ISTIC、CSCD

Volume:27

Issue:4

Page Number:399-403

ISSN No.:1004-9037

Key Words:宽带循环平稳信号;α稳定分布;分数低阶循环相关;波达方向(DOA)估计

Abstract:针对传统二阶循环相关算法在脉冲噪声环境中的显著退化问题,本文以α稳定分布为噪声模型,提出基于分数低阶循环相关的波达方向(Direction of arrival,DOA)估计算法.利用分数低阶循环相关的相移特性,将宽带循环平稳信号的DOA估计问题转化为“中心频率”为ε的窄带问题,解决了宽带情况下DOA估计困难的问题.计算机仿真结果进一步验证了此算法的有效性,且性能优于传统SC-SSF (Spectral correlation signal subspace fitting)算法.

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