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一种基于空频结构与空时结构权值转换的精确宽带波束赋形算法

王旭 谢菊兰 何子述 李会勇

王旭, 谢菊兰, 何子述, 李会勇. 一种基于空频结构与空时结构权值转换的精确宽带波束赋形算法[J]. 电子与信息学报, 2019, 41(5): 1032-1039. doi: 10.11999/JEIT180545
引用本文: 王旭, 谢菊兰, 何子述, 李会勇. 一种基于空频结构与空时结构权值转换的精确宽带波束赋形算法[J]. 电子与信息学报, 2019, 41(5): 1032-1039. doi: 10.11999/JEIT180545
Xu WANG, Julan XIE, Zishu HE, Huiyong LI. An Accurate Wideband Beampattern Synthesis Method Based on the Space-frequency Structure and the Space-time Structure Conversion[J]. Journal of Electronics & Information Technology, 2019, 41(5): 1032-1039. doi: 10.11999/JEIT180545
Citation: Xu WANG, Julan XIE, Zishu HE, Huiyong LI. An Accurate Wideband Beampattern Synthesis Method Based on the Space-frequency Structure and the Space-time Structure Conversion[J]. Journal of Electronics & Information Technology, 2019, 41(5): 1032-1039. doi: 10.11999/JEIT180545

一种基于空频结构与空时结构权值转换的精确宽带波束赋形算法

doi: 10.11999/JEIT180545
基金项目: 国家自然科学基金(61871085),高校基本科研业务费(2672018ZYGX2018J010)
详细信息
    作者简介:

    王旭:男,1987年生,博士生,研究方向为阵列空时信号处理和波束形成以及抗干扰技术

    谢菊兰:女,1981年生,副教授,博士,研究方向为数字波束形成和DOA估计

    何子述:男,1962年生,教授,博士,研究方向为阵列信号处理、自适应信号处理和MIMO雷达与通信

    李会勇:男,1975年生,教授,博士,研究方向为阵列信号处理和自适应信号处理

    通讯作者:

    王旭 alienfrog@163.com

  • 中图分类号: TN911.7

An Accurate Wideband Beampattern Synthesis Method Based on the Space-frequency Structure and the Space-time Structure Conversion

Funds: The National Natural Science Foundation of China (61871085), The Fundamental Research Funds for the Central Universities (2672018ZYGX2018J010)
  • 摘要:

    该文提出一种空时结构下的精确宽带波束赋形算法。在空频结构下,对各子带权值进行波束赋形优化。根据权值在满足共轭对称条件下,阵列幅度响应可以转换为线性函数这一原理,将波束赋形转换为凸优化问题。利用内点法得到最优权值后,通过空频结构与空时结构之间的权值转换关系,得到空时结构下的波束权值。该算法能够对宽带波束图进行精确地赋形,同时保证在期望方向上阵列响应具有线性相位特性。仿真结果验证了算法的有效性。

  • 图  1  常用宽带阵列结构

    图  2  未赋形时的波束图

    图  3  低旁瓣波束图

    图  4  宽零点波束图

    图  5  宽主瓣、宽零陷波束图

    表  1  3种方法的计算量比较

    方法迭代次数每次迭代的运算量
    式(13)$O\left(\sqrt {{K_4}(2{K_1} + {K_2} + {K_3}) + 2} \right)$$O\left\{ (MN)^2[{K_4}(6{K_1} + 3{K_2}{+ 3}{K_3}) + 2{K_4} + 1]\right\} $
    式(14)$O\left(\sqrt {2{K_1} + {K_4}({K_2} + {K_3}) + 2} \right)$$O\left\{ {(MN)^2}[6{K_1} + 3{K_4}({K_2} + {K_3}) + MN{\rm{ + }}3]\right\} $
    式(21)$O\left(\sqrt {2N} \right)$$O\left\{ {(M/2)^2}[N(4{K_1} + 2{K_2} + 2{K_3}) + MN + 3N]\right\} $
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-06-04
  • 修回日期:  2018-12-03
  • 网络出版日期:  2018-12-11
  • 刊出日期:  2019-05-01

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