涡旋电磁波雷达锥体目标旋转多普勒探测

王煜 刘康 王建秋 王宏强 程永强

王煜, 刘康, 王建秋, 等. 涡旋电磁波雷达锥体目标旋转多普勒探测[J]. 雷达学报, 2021, 10(5): 740–748. doi: 10.12000/JR21074
引用本文: 王煜, 刘康, 王建秋, 等. 涡旋电磁波雷达锥体目标旋转多普勒探测[J]. 雷达学报, 2021, 10(5): 740–748. doi: 10.12000/JR21074
WANG Yu, LIU Kang, WANG Jianqiu, et al. Rotational Doppler detection of a cone-shaped target under the illumination of a vortex electromagnetic wave[J]. Journal of Radars, 2021, 10(5): 740–748. doi: 10.12000/JR21074
Citation: WANG Yu, LIU Kang, WANG Jianqiu, et al. Rotational Doppler detection of a cone-shaped target under the illumination of a vortex electromagnetic wave[J]. Journal of Radars, 2021, 10(5): 740–748. doi: 10.12000/JR21074

涡旋电磁波雷达锥体目标旋转多普勒探测

doi: 10.12000/JR21074
基金项目: 国家自然科学基金(61801486, 61921001)
详细信息
    作者简介:

    王煜:王 煜(1996–),男,江苏东台人,国防科技大学电子科学学院博士研究生。主要研究方向为涡旋电磁波雷达探测与信号处理

    刘康:刘 康(1990–),男,江苏泗阳人,国防科技大学电子科学学院副教授。主要研究方向为雷达前视成像与电磁涡旋技术

    王建秋(1994–),男,安徽安庆人,国防科技大学电子科学学院博士研究生。主要研究方向为电磁涡旋与雷达前视成像

    王宏强(1970–),男,陕西宝鸡人,国防科技大学电子科学学院研究员。主要研究方向为太赫兹雷达与雷达成像

    程永强(1982–),男,河北张家口人,国防科技大学电子科学学院副研究员。主要研究方向为信息几何与统计信号处理

    通讯作者:

    刘康 liukang1117@126.com

  • 责任主编:郭忠义 Corresponding Editor: GUO Zhongyi
  • 中图分类号: TN95

Rotational Doppler Detection of a Cone-shaped Target under the Illumination of a Vortex Electromagnetic Wave

Funds: The National Natural Science Foundation of China (61801486, 61921001)
More Information
  • 摘要: 涡旋电磁波具有独特螺旋状波前结构,其受目标横向微动调制产生的旋转多普勒效应,有望为雷达目标探测技术的发展提供一个新途径。在涡旋电磁波照射下,利用锥体微动对回波瞬时频率的周期性调制特性,可以有效反演出锥体目标的微动参数和几何特征。该文重点研究了雷达前视条件下的锥体目标参数估计。首先,基于涡旋电磁波雷达目标旋转多普勒探测原理,推导了涡旋电磁波锥体目标回波数学方程,建立了锥体目标回波旋转多普勒模型。其次,提出了前视条件下的锥体目标参数估计方法,利用锥顶散射点和锥底散射点两维的旋转多普勒信息,可以对锥体目标微动参数和几何特征参数进行有效估计,仿真结果验证了该文所提方法的有效性及抗噪声鲁棒性。

     

  • 图  1  涡旋电磁波雷达锥体目标探测示意图

    Figure  1.  Diagram of the vortex electromagnetic radar cone-shaped target detection

    图  2  目标微动投影到XOY平面

    Figure  2.  Projection of the target micro-motion to the XOY plane

    图  3  回波时频分布与多普勒模型对比

    Figure  3.  Comparison of echo time-frequency distribution and Doppler model

    图  4  信号分离及参数估计方法流程

    Figure  4.  Flowchart of the signal separation and parameter estimation method

    图  5  仿真结果

    Figure  5.  Simulation result

    图  6  不同信噪比下的目标参数估计误差

    Figure  6.  Target parameter estimation error under different SNR

    表  1  参数估计结果

    Table  1.   Parameter estimation result

    参数真实值估计值估计误差 (%)
    θc15°14.5758°2.83
    Ωc8π rad/s7.8821π rad/s1.47
    H2 m2.0105 m0.52
    ra0.5 m0.5426 m8.52
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出版历程
  • 收稿日期:  2021-06-07
  • 修回日期:  2021-08-13
  • 网络出版日期:  2021-09-06
  • 刊出日期:  2021-10-28

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