融合ω-K和BP算法的圆柱扫描毫米波三维成像算法

谢朋飞; 张磊; 吴振华

doi:10.12000/JR17112

融合ω-K和BP算法的圆柱扫描毫米波三维成像算法

doi: 10.12000/JR17112

西安电子科技大学雷达信号处理国家重点实验室西安 710071
西安电子科技大学信息感知技术协同创新中心西安 710071

基金项目: 国家自然科学基金（61771372，61771367），上海市自然科学基金（16ZR1434900）

详细信息

作者简介:
谢朋飞(1992–)，男，河南项城人，硕士生，2016年在青岛理工大学理学院获得学士学位，现为雷达信号处理国家重点实验室在读硕士研究生，研究方向为合成孔径雷达成像。E-mail: PerfeiShieh@126.com

张　磊(1984–)，男，浙江金华人，博士，副教授。2012年在西安电子科技大学电子工程学院获得博士学位，现担任西安电子科技大学电子工程学院副教授。研究方向为雷达成像、目标识别。E-mail: leizhang@xidian.edu.cn

吴振华(1993–)，男，安徽淮北人，博士生。2014年在西安电子科技大学电子工程学院获得学士学位，现为雷达信号处理国家重点实验室在读博士研究生。目前主要研究方向为毫米波成像、压缩感知等。E-mail: Wudoufenglan@gmail.com

通讯作者:
张磊 leizhang@xidian.edu.cn

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出版历程
- 收稿日期: 2017-11-24
- 修回日期: 2018-01-19
- 网络出版日期: 2018-06-28

A Three-dimensional Imaging Algorithm Fusion with ω-K and BP Algorithm for Millimeter-wave Cylindrical Scanning

National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China
Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi’an 710071, China

Funds: The National Natural Science Foundation of China (61771372, 61771367), The Natural Science Foundation of Shanghai (16ZR1434900)

摘要

摘要: 结合主动式圆柱扫描毫米波3维成像安检仪的实际应用需求，该文提出一种用于3维场景重建的新方法。该方法采用ω-K算法实现天线阵列方向和距离方向的解耦合与聚焦，再采用后向投影(BP)算法进行距离方向和角度方向的合成孔径处理实现聚焦，进而实现3维场景的重建。3维人体模型仿真和实测数据处理结果表明，该方法具备理论可行性和工程适用性，除此之外，该文方法在CUDA平台下可以实现快速精确3维人体成像，并且能够适应非理想圆柱扫描轨迹3维成像应用。
- 3维成像 /
- 合成孔径 /
- 毫米波 /
- ω-K算法 /
- BP算法
Abstract: A new Three-Dimensional (3D) scene reconstruction method is proposed to meet the practical application requirement of the active cylindrical scanning millimeter-wave 3D imaging security apparatus. Specifically, the ω-K algorithm is firstly used to realize the decoupling and focusing between the antenna array direction and the range direction, then the synthetic aperture processing between the distance and angle direction is performed to achieve the focusing with the Back Projection (BP) algorithm, realizing the fully 3D scene reconstruction. The echo data processing results of the simulated and measured 3D human model show that this method is theoretical feasible with good practical applicability. Besides, the proposed method could realize the fast and accurate 3D human imaging by CUDA platform and be applicable to the nonideal cylindrical scanning 3D imaging scenarios.
- Three-dimensional imaging /
- Synthetic aperture /
- Millimeter-wave /
- ω-K algorithm /
- Back Projection (BP) algorithm

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图 1 圆柱扫描3维成像系统模型

Figure 1. Three-dimensional imaging system model of cylindrical scanning

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图 2 3维场景成像切片划分

Figure 2. Imaging slice division of three-dimensional scene

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图 3 3维场景重构算法流程

Figure 3. Algorithm flow of three-dimensional scene reconstruction

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图 4 3维人体模型及阵列运动轨迹

Figure 4. Three-dimensional human model and the trajectory of antenna array

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图 5 多视角成像结果

Figure 5. Multi-view imaging results

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图 6 成像结果对比

Figure 6. Comparison of imaging results

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图 7 圆柱扫描实测数据成像结果对比

Figure 7. Comparison of imaging results of measured data from cylindrical scanning

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