基于时间平滑和Toeplitz矩阵重构的复相干信号DoA估计

计算机应用 ›› 2011, Vol. 31 ›› Issue (12): 3233-3235.

基于时间平滑和Toeplitz矩阵重构的复相干信号DoA估计

隋伟伟¹,²,³,景小荣¹,²,³,周围¹,³,张永杰¹

1. 移动通信技术重庆市重点实验室, 重庆 400065
2. 中国电子科技集团公司第54研究所通信网信息传输与分发技术重点实验室，石家庄 050081
3. 重庆邮电大学通信与信息工程学院，重庆 400065

收稿日期:2011-06-28 修回日期:2011-08-03 发布日期:2011-12-12 出版日期:2011-12-01
通讯作者: 隋伟伟
基金资助:
国家863计划项目;重庆市自然科学基金资助项目;重庆市教委科研项目;中国电子科技集团公司第54研究所通信网信息传输与分发技术重点实验室开放课题

DoA estimation of complex coherent signals based on temporal smoothing and reconstruction of Toeplitz matrix

SUI Wei-wei¹,²,³,JING Xiao-rong¹,²,⁴,ZHOU Wei¹,²,ZHANG Yong-jie¹

1. Chongqing Key Laboratory of Mobile Communications Technology，Chongqing 400065，China
2. School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065，China
3. Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory，the 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang Hebei 050081，China
4. Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory， the 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang Hebei 050081，China

Received:2011-06-28 Revised:2011-08-03 Online:2011-12-12 Published:2011-12-01
Contact: SUI Wei-wei

摘要/Abstract

摘要： 针对相干多径环境，分别利用时间平滑和Toeplitz矩阵重构算法实现了复相干信号的波达方向(DoA)估计，并进一步通过数学分析和计算机仿真对这两种算法的性能进行了对比，得出结论：时间平滑算法和Toeplitz矩阵重构算法对复相干信号的DoA估计均具有效性，Toeplitz矩阵重构算法性能相对较好，但有一定阵列孔径损失；而基于时间平滑算法无阵列孔径损失，可估计M-1个多径信号(M为阵元数)，但计算量偏大。

关键词: 阵列信号处理, 复相干信号, DoA估计, 时间平滑, Toeplitz

Abstract: Under the condition of coherent multipath environment, the algorithms of temporal smoothing and reconstruction of Toeplitz matrix were adopted respectively to estimate the DoAs (Direction of Arrivals) of complex coherent signals, furthermore these two algorithms were compared through mathematical analysis and computer simulation, and the following conclusion could be obtained: Both of these two algorithms for DoA estimation of complex coherent signals have the effectivity, the performance of algorithm based on reconstruction of Toeplitz matrix is relatively better but it will lose the array aperture, the algorithm based on temporal smoothing will not lose array aperture and can estimate M-1 coherent multi-paths (M is the number of array elements), however, it has a slightly larger calculation load.

Key words: array signal processing, complex coherent signals, DoA estimation, temporal smoothing, Toeplitz

隋伟伟景小荣周围张永杰. 基于时间平滑和Toeplitz矩阵重构的复相干信号DoA估计[J]. 计算机应用, 2011, 31(12): 3233-3235.

SUI Wei-wei JING Xiao-rong ZHOU Wei ZHANG Yong-jie. DoA estimation of complex coherent signals based on temporal smoothing and reconstruction of Toeplitz matrix[J]. Journal of Computer Applications, 2011, 31(12): 3233-3235.

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