多径环境下循环平稳信号的波达方向估计方法

doi:10.13190/jbupt.200901.43.guoy

北京邮电大学学报 ›› 2009, Vol. 32 ›› Issue (1): 43-46.doi: 10.13190/jbupt.200901.43.guoy

多径环境下循环平稳信号的波达方向估计方法

郭艳刘学亮李宁王金龙

解放军理工大学

收稿日期:2008-04-04 修回日期:2008-11-04 出版日期:2009-01-28 发布日期:2009-01-28
通讯作者: 郭艳

Estimation of Direction-of-Arrival of Cyclostationary Signals in Multipath Propagation Environments

Received:2008-04-04 Revised:2008-11-04 Online:2009-01-28 Published:2009-01-28

摘要/Abstract

摘要：

结合虚拟平移技术，提出了虚拟平移循环自相关和虚拟平移循环互相关2种算法.该算法克服了循环多重信号分类及空间平滑类算法的不足，在不影响阵列孔径的情况下，使阵列可估计的相干期望信源数目达到 ^{M-1(M为阵元数)}^._。理论分析和仿真试验证实，该算法适用于相干信号和非相干信号的波达方向估计。

关键词: 循环平稳, 相干信号, 波达方向, 虚拟平移

Abstract:

Two approaches called virtual moving-cyclic autocorrelation (VM-CAC) and virtual moving-cyclic crosscorrelation (VM-CCC) based on conjugate Cyclic MUSIC is proposed for a uniform linear array. Compared with spatial smoothing scheme, the coherent signals that caused rank deficiency are decorrelated without reducing the effective aperture of the array. Simulation results are presented that a higher resolution performance will be achieved relative to the conventional ones.

Key words: color: black, font-size: 10.5pt, mso-fareast-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA" lang="EN-US">Cyclostationaritycolor: black, font-size: 10.5pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-family: 'Times New Roman', mso-hansi-font-family: 'Times New Roman', mso-ascii-font-family: 'Times New Roman'">；color: black, font-size: 10.5pt, mso-fareast-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA" lang="EN-US">Coherent signalscolor: black, font-size: 10.5pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-family: 'Times New Roman', mso-hansi-font-family: 'Times New Roman', mso-ascii-font-family: 'Times New Roman'">；color: black, font-size: 10.5pt, mso-fareast-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA" lang="EN-US">Direction-of-arrivalcolor: black, font-size: 10.5pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-family: 'Times New Roman', mso-hansi-font-family: 'Times New Roman', mso-ascii-font-family: 'Times New Roman'">；color: black, font-size: 10.5pt, mso-fareast-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA" lang="EN-US">Virtual moving.

郭艳刘学亮李宁王金龙. 多径环境下循环平稳信号的波达方向估计方法[J]. 北京邮电大学学报, 2009, 32(1): 43-46.

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多径环境下循环平稳信号的波达方向估计方法

Estimation of Direction-of-Arrival of Cyclostationary Signals in Multipath Propagation Environments

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