计算机科学 ›› 2021, Vol. 48 ›› Issue (4): 282-287.doi: 10.11896/jsjkx.200300029

• 计算机网络 • 上一篇    下一篇

基于时空联合估计噪声子空间的MUSIC波束形成方法

王思秀1, 郭文强1, 汪晓洁1,2, 张传朋3   

  1. 1 新疆财经大学网络空间安全学院 乌鲁木齐830012
    2 新疆大学信息科学与工程学院 乌鲁木齐830011
    3 中国科学院FAST重点实验室 北京100101
  • 收稿日期:2020-06-24 修回日期:2020-05-22 出版日期:2021-04-15 发布日期:2021-04-09
  • 通讯作者: 郭文强(www20050315@126.com)
  • 基金资助:
    国家自然科学基金青年基金项目(11703040);新疆维吾尔自治区高校科研计划项目(XJEDU2017S036,XJEDU2019Y036)

MUSIC Beam-forming Method Based on Temporal and Spatial Union Estimation of Noise Subspaces

WANG Si-xiu1, GUO Wen-qiang1, WANG Xiao-jie1,2, ZHANG Chuan-peng3   

  1. 1 School of Cyber Science and Engineering,Xinjiang University of Finance and Economics,Urumqi 830012,China
    2 College of Information Science and Engineering,Xinjiang University,Urumqi 830011,China
    3 Key Laboratory of Five-hundred-meter Aperture Spherical Radio Telescope,Chinese Academy of Sciences,Beijing 100101,China
  • Received:2020-06-24 Revised:2020-05-22 Online:2021-04-15 Published:2021-04-09
  • About author:WANG Si-xiu,born in 1981,master,associate professor.His main research interests include signal processing and so on.(wsx20050315@163.com)
    GUO Wen-qiang,born in 1975,Ph.D,professor.His main research interests include blind signal processing and so on.
  • Supported by:
    Young Scientists Fund of the National Natural Science Foundation of China(11703040) and Scientific Research Program in Universities of Xinjiang Uygur Autonomous Region(XJEDU2017S036,XJEDU2019Y036).

摘要: 针对在宽带短脉冲情况下频域MUSIC波束形成过程中噪声子空间估计不稳定的问题,提出了一种基于时空联合估计噪声子空间的MUSIC波束形成方法。该方法首先对线列阵接收数据构造时域复解析数据;然后根据增广数据构造方法和空间滑动的方法,在时域数据长度更短的情况下,稳定实现噪声子空间估计;最后根据估计出的噪声子空间含有的正交特性,通过单位矩阵与噪声特征向量相乘来得到相应波束。数值仿真和实测数据处理结果表明,相比频域MUSIC波束形成方法,该方法减少了稳定获取噪声子空间所需的快拍数,具有较好的稳定性和检测性能,提高了MUSIC波束形成在实际应用中的鲁棒性。

关键词: MUSIC波束形成, 宽带短脉冲, 时空联合估计, 时域复解析

Abstract: Under the case of broadband short pulse,for the instability problem of noise subspaces estimation in frequency domain MUSIC beam-forming,a MUSIC beam-forming method based on temporal and spatial union estimation of noise subspaces is proposed.Firstly,this method constructs the complex analytic data for liner array receiving data in time domain.Then,according to the construction method of time domain augmented data and the spatial sliding motion method,this method stably realizes noise subspaces estimation with shorter data length.Lastly,based on the orthogonal property of noise subspaces,this method obtains the corresponding beam via identity matrix and noise eigenvector.The numerical simulation and measured data processing results show that,compared with the frequency domain MUSIC beam-forming,the new approach reduces the number of snapshots for stably obtaining noise subspace,has better stability and detection performance, and improves the robustness of MUSIC beam-forming in the practical application.

Key words: Broadband short pulse, MUSIC beam-forming, Temporal and spatial union estimation, Time domain complex analytics

中图分类号: 

  • TN911.7
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