QIU Tianshuang   

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Language:English

Paper Publications

Title of Paper:基于广义秩模型的分数低阶协方差波束形成

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Date of Publication:2014-03-26

Journal:系统工程与电子技术

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

Volume:36

Issue:6

Page Number:1033-1038

ISSN No.:1001-506X

Key Words:广义秩;稳定分布噪声;分数低阶协方差;波束形成

Abstract:在广义秩信号模型基础上,设计了一种鲁棒波束自适应波束形成方法。通过引入分数低阶变换来抑制非高斯稳定分布噪声,提出脉冲噪声环境下能够处理信号失配的鲁棒波束形成器算法,并讨论了分数低阶协方差矩阵的可逆性。由于采用 Frobenius 范数建立明确的模型来刻画期望阵列响应与数据的协方差矩阵之间的不确定性,因此所提算法具有解析闭合形式解。仿真结果表明:与传统波束形成算法相比,所提算法在脉冲稳定分布噪声和信号失配同时存在的情况时具有更好的鲁棒性。

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