无先验模型复杂结构设施SAR全方位三维成像方法研究

林赟 张琳 韦立登 张汉卿 冯珊珊 王彦平 洪文

林赟, 张琳, 韦立登, 等. 无先验模型复杂结构设施SAR全方位三维成像方法研究[J]. 雷达学报, 2022, 11(5): 909–919. doi: 10.12000/JR22148
引用本文: 林赟, 张琳, 韦立登, 等. 无先验模型复杂结构设施SAR全方位三维成像方法研究[J]. 雷达学报, 2022, 11(5): 909–919. doi: 10.12000/JR22148
LIN Yun, ZHANG Lin, WEI Lideng, et al. Research on full-aspect three-dimensional SAR imaging method for complex structural facilities without prior model[J]. Journal of Radars, 2022, 11(5): 909–919. doi: 10.12000/JR22148
Citation: LIN Yun, ZHANG Lin, WEI Lideng, et al. Research on full-aspect three-dimensional SAR imaging method for complex structural facilities without prior model[J]. Journal of Radars, 2022, 11(5): 909–919. doi: 10.12000/JR22148

无先验模型复杂结构设施SAR全方位三维成像方法研究

doi: 10.12000/JR22148
基金项目: 国家自然科学基金(61860206013, 62131001),快速扶持项目(80913010302),北京市教育委员会创新团队建设计划(IDHT20190501)
详细信息
    作者简介:

    林 赟,博士,副研究员,硕士生导师,主要研究方向为多角度SAR三维成像技术

    韦立登,博士,研究员,研究方向为机载SAR成像与InSAR处理技术

    洪 文,博士,研究员,博士生导师,研究方向为合成孔径雷达(SAR)成像新概念新体制、多维度SAR成像机理与方法

    通讯作者:

    洪文 whong@mail.ie.ac.cn

  • 责任主编:张晓玲 Corresponding Editor: ZHANG Xiaoling
  • 中图分类号: TN959

Research on Full-aspect Three-dimensional SAR Imaging Method for Complex Structural Facilities without Prior Model

Funds: The National Natural Science Foundation of China (61860206013, 62131001), Rapid Support Project (80913010302), Innovation Team Building Support Program of Beijing Municipal Education Commission (IDHT20190501)
More Information
  • 摘要: 复杂结构设施的SAR三维成像是SAR成像领域的热点和难点问题。现有SAR三维成像依赖于高程方向的多通道或多次飞行,对雷达系统或数据获取的要求较高。该文提出无先验模型复杂结构设施三维成像方法,仅需一次飞行即可获得先验信息未知区域全场景全方位三维图像。该方法充分利用圆迹SAR的全方位观测、解叠掩和解高程模糊优势,无需目标预先建模和三维成像网格构建,适用于大面积区域复杂结构设施的精细三维成像,在雷达三维成像实用化技术方面取得了重要进展。通过该方法首次获得FAST射电望远镜的雷达全方位三维图像,验证了理论与方法的正确性与有效性。

     

  • 图  1  干涉圆迹SAR观测几何

    Figure  1.  InCSAR imaging geometry

    图  2  圆迹SAR解叠掩能力示意图

    Figure  2.  Layover resolving capability of circular SAR

    图  3  无先验模型SAR全方位三维成像方法流程图

    Figure  3.  Flow chart of full-aspect 3D SAR imaging method without prior model

    图  4  干涉圆迹SAR瞬时观测几何

    Figure  4.  Instantaneous geometry of InCAR

    图  5  多角度解模糊示意图

    Figure  5.  Diagram of multi-aspect ambiguity resolving

    图  6  多角度匹配解模糊流程

    Figure  6.  Flow chart of multi-aspect ambiguity resolving

    图  7  机载实验飞行轨迹与观测目标

    Figure  7.  Flight trajectory and the observed object

    图  8  某子孔径SAR图像与干涉相位图

    Figure  8.  SAR image and interferogram of certain subapture

    图  9  某子孔径三维点云

    Figure  9.  3D point cloud of certain subapture

    图  10  常规条带SAR图像与全方位三维SAR图像对比

    Figure  10.  Comparison between conventional stripmap SAR image and full-aspect 3D SAR image

    表  1  Ka波段机载干涉圆迹SAR实验参数

    Table  1.   Parameters of Ka-band airborne InCSAR experiment

    参数数值参数数值
    中心频率35 GHz带宽900 MHz
    基线长度0.156 m基线倾角45°
    飞行高度4000 m飞行半径3000 m
    场景海拔940 m
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-07-14
  • 修回日期:  2022-08-04
  • 网络出版日期:  2022-08-22
  • 刊出日期:  2022-10-28

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