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基于扫描旋转同步运动的三维成像方法

赵京城 娄长玉 苗俊刚 轩师扬

赵京城,娄长玉,苗俊刚,等. 基于扫描旋转同步运动的三维成像方法[J]. 北京航空航天大学学报,2024,50(3):796-802 doi: 10.13700/j.bh.1001-5965.2022.0266
引用本文: 赵京城,娄长玉,苗俊刚,等. 基于扫描旋转同步运动的三维成像方法[J]. 北京航空航天大学学报,2024,50(3):796-802 doi: 10.13700/j.bh.1001-5965.2022.0266
ZHAO J C,LOU C Y,MIAO J G,et al. 3D imaging method based on scanning rotation synchronous motion[J]. Journal of Beijing University of Aeronautics and Astronautics,2024,50(3):796-802 (in Chinese) doi: 10.13700/j.bh.1001-5965.2022.0266
Citation: ZHAO J C,LOU C Y,MIAO J G,et al. 3D imaging method based on scanning rotation synchronous motion[J]. Journal of Beijing University of Aeronautics and Astronautics,2024,50(3):796-802 (in Chinese) doi: 10.13700/j.bh.1001-5965.2022.0266

基于扫描旋转同步运动的三维成像方法

doi: 10.13700/j.bh.1001-5965.2022.0266
详细信息
    通讯作者:

    E-mail:zjccool@126.com

  • 中图分类号: V221+.3;TB553

3D imaging method based on scanning rotation synchronous motion

More Information
  • 摘要:

    为满足在役战机隐身性能的快速检测需求,提出了一种基于垂直扫描、方位旋转同步运动的三维成像方法。成像系统主要由射频收发设备、收发天线对、竖直方向导轨、转台和数据处理终端构成。天线发射频率步进信号时,对转台上的被测目标进行水平旋转,同时,收发天线对在垂直方向上扫描被测目标。以点目标组合为例,通过理论分析和仿真计算,确定该成像系统的参数配置,比较不同参数配置下系统的三维成像性能。仿真结果表明:采用垂直扫描、方位旋转同步运动方法能够实现三维成像,该方法与经典圆柱面扫描方法相比,扫描时间可缩短92%,同时保持11 dB峰值旁瓣比率。所提方法具有测试效率高、系统搭建简单、易于调节的特点,为服役阶段的隐身飞机散射源诊断提供了一种有效的测量方法选择。

     

  • 图 1  扫描旋转同步运动的散射测量方法示意图

    Figure 1.  Schematic diagram of scattering measurement method of scanning rotational synchronous motion

    图 2  不同扫描方式下合成运动轨迹的采样矩阵平面展开示意图

    Figure 2.  Plane expansion diagram of sampling matrix for synthetic motion trajectories under different scanning modes

    图 3  扫描旋转同步运动的成像计算模型示意图

    Figure 3.  Schematic diagram of imaging calculation model of scanning rotational synchronous motion

    图 4  导轨扫描正视图

    Figure 4.  Front view of guide rail scanning

    图 5  飞机简单散射点模型

    Figure 5.  Simple scattering point model of aircraft

    图 6  不同扫描方式下的三维成像效果

    Figure 6.  Three dimensional imaging effect under different scanning modes

    图 7  扫描旋转同步运动方式下三维成像对比

    Figure 7.  Comparison of 3D imaging under scanning rotation synchronous motion

    表  1  不同方式扫描结果对比

    Table  1.   Comparison of scanning results in different ways

    扫描方式采样时间/min可分辨最小
    动态范围/dB
    缩短时间
    比例/%
    满阵柱面口径扫描
    (转台角度间隔0.16°)
    217.0813
    扫描旋转同步运动
    (转台角度间隔0.13°)
    4.3698.02
    扫描旋转同步运动
    (转台角度间隔0.033°)
    17.21192.08
    下载: 导出CSV
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  • 被引次数: 0
出版历程
  • 收稿日期:  2022-04-21
  • 录用日期:  2022-07-17
  • 网络出版日期:  2022-08-19
  • 整期出版日期:  2024-03-27

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