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

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

林赟¹,
张琳¹,
韦立登²,
张汉卿^{3, 4},
冯珊珊^{3, 4},
王彦平¹,
洪文^{3, 4, ,}

1.
北方工业大学信息学院雷达监测技术实验室北京 100144
2.
北京无线电测量研究所北京 100854
3.
中国科学院空天信息创新研究院北京 100094
4.
中国科学院空间信息处理与应用系统技术重点实验室北京 100190

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
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- 被引次数: 0
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

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

LIN Yun¹,
ZHANG Lin¹,
WEI Lideng²,
ZHANG Hanqing^{3, 4},
FENG Shanshan^{3, 4},
WANG Yanping¹,
HONG Wen^{3, 4
, ,}

1.
Radar Monitoring Technology Laboratory, School of Information, North China University of Technology, Beijing 100144, China
2.
Beijing Institute of Radio Measurement, Beijing 100854, China
3.
Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
4.
Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Chinese Academy of Sciences, Beijing 100190, China

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

Corresponding author: HONG Wen, whong@mail.ie.ac.cn

摘要

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。
- SAR三维成像 /
- 多角度SAR /
- 全方位SAR /
- 圆迹SAR /
- 干涉SAR
Abstract: SAR three-Dimensional (3D) imaging of complex structural facilities is an important and challenging issue in SAR imaging. The existing 3D SAR imaging relies on multiple channels or flights in the elevation direction, exerting high demands on the radar system or data acquisition. This paper proposes a 3D imaging method for complex structural facilities without a prior model, and the full-aspect 3D image of the entire scene in the region with unknown prior information can be obtained solely using a single flight. This method completely utilizes the full-aspect observation as well as the layover and elevation ambiguity resolving capabilities of circular SAR without requiring target pre-modeling and 3D imaging grid construction. Moreover, the method is suitable for fine 3D imaging complex structural facilities in large areas. Significant progress has been made in the practical technology of radar 3D imaging. The full-aspect 3D radar images of the FAST radio telescope are obtained for the first time with the proposed method, thus verifying the correctness and effectiveness of our theory and method.
- 3D SAR imaging /
- Multi-aspect SAR /
- Full-aspect SAR /
- Circular SAR /
- InSAR

HTML全文

图 1 干涉圆迹SAR观测几何

Figure 1. InCSAR imaging geometry

下载: 全尺寸图片幻灯片

图 2 圆迹SAR解叠掩能力示意图

Figure 2. Layover resolving capability of circular SAR

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

图 4 干涉圆迹SAR瞬时观测几何

Figure 4. Instantaneous geometry of InCAR

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图 5 多角度解模糊示意图

Figure 5. Diagram of multi-aspect ambiguity resolving

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图 6 多角度匹配解模糊流程

Figure 6. Flow chart of multi-aspect ambiguity resolving

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图 7 机载实验飞行轨迹与观测目标

Figure 7. Flight trajectory and the observed object

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图 8 某子孔径SAR图像与干涉相位图

Figure 8. SAR image and interferogram of certain subapture

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图 9 某子孔径三维点云

Figure 9. 3D point cloud of certain subapture

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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

下载: 全尺寸图片幻灯片

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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