室内人体隐匿物被动太赫兹成像研究进展

丁丽; 丁茜; 叶阳阳; 朱亦鸣

doi:10.3788/CO.20171001.0114

室内人体隐匿物被动太赫兹成像研究进展

doi: 10.3788/CO.20171001.0114

上海理工大学上海市现代光学系统重点实验室, 上海 200093

基金项目:

上海市自然科学基金资助项目 16ZR1423100

上海高校青年教师培养资助项目 ZZsl15009

详细信息

作者简介:
丁丽(1985-), 女, 浙江湖州人, 博士, 讲师, 主要从事太赫兹成像方面的研究。E-mail:sunnylding@usst.edu.cn

通讯作者:
朱亦鸣(1979-)，男，上海人，博士，教授，博士生导师，主要从事太赫兹波谱与成像方面的研究。E-mail:ymzhu@usst.edu.cn

中图分类号: TP394.1;TH691.9
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出版历程
- 收稿日期: 2016-09-21
- 修回日期: 2016-11-15
- 刊出日期: 2017-02-25

Overview of passive terahertz imaging systems for indoor concealed detection

Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China

Funds:

Supported by Natural Science Foundation of Shanghai 16ZR1423100

Foundation for the Youth of Colleges and Universities of Shanghai ZZsl15009

More Information

Corresponding author: E-mail:ymzhu@usst.edu.cn

摘要

摘要: 太赫兹波由于其极低的光子能量和对非极性物质较强的穿透特性已成为人体隐匿物检测应用的热点。本文以室内人体隐匿物品探测为主要应用背景，简要介绍了太赫兹波段的大气传播特性；重点分析了基于辐射检测的室内被动太赫兹成像原理和系统的关键技术，包括辐射计和阵列扫描方式等；回顾了国内外被动太赫兹成像技术在人体安检领域的研究现状。综合考虑系统成本和成像时间，一定数量的高灵敏度辐射计加上扫描机构成像的方式在未来很长一段时间里将是被动太赫兹成像系统的主流方式。
- 太赫兹波 /
- 被动成像 /
- 辐射计 /
- 人体安检
Abstract: Terahertz wave has become a hot research point for body hidden objects detection applications due to its extremely low photon energy and the strong penetration properties to non-polar material. In this paper, taking indoor body concealed detection as the main background, we briefly introduce the atmospheric propagation characteristics of THz waveband. Then we focus on the analysis of the indoor passive terahertz imaging principle and the key technology of imaging system based on radiation detection, including radiometer and scanning array mode, and review the research status of passive terahertz imaging technology in the field of human body security inspection at home and abroad. Considering system cost and imaging time, passive terahertz imaging system consisting of a certain number of high sensitivity radiation meters and scanning imaging mechanism will be the mainstream in the future for a long time.
- Terahertz wave /
- passive imaging /
- radiometer /
- personnel security screening

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图 1 可见光、太赫兹和红外成像结果比较

Figure 1. Comparison among optic, terahertz and infrared imaging performance

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图 2 电磁波辐射衰减曲线

Figure 2. Electromagnetic radiation attenuation

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图 3 室内被动成像温度模型

Figure 3. Temperature model for indoor passive imaging

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图 4 太赫兹全功率辐射计原理框图

Figure 4. Diagram of terahertz full power radiometer

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图 5 单辐射计二维扫描示意图

Figure 5. Diagram of two-dimensional scanning by a single radiometer

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图 6 太赫兹准光学被动成像原理

Figure 6. Diagram of FPA

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图 7 平面扫描

Figure 7. Diagram of flat scanning

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图 8 基于卡塞格伦结构的折叠光路扫描

Figure 8. Diagram of folded optical path based on Cassegrain

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表 1 国外太赫兹被动成像系统

Table 1. Terahertz passive imaging system at abroad

国别	公司	中心频率/GHz	帧速率/Hz	温度分辨率/K	阵元数/个	空间分辨率
美国	NGC	89	17	2	1 040	2.1 cm@5 m
	Millivision Vela 125	94	10	3	64	5 cm@1.6 m
	Millitech	94	30	/	64	3 cm@5 m
	Brijot BIS-WDS^? GEN2	90	4-12	1	16	6 cm@(3~5 m)
	Thruvision T4000	250	/	＞1	/	3 cm@3 m
英国	QinetiQ iSPO-30	94	15	5	64	2.5 cm@5 m
德国	Jena/IPHT Safe-visitor	350	10	/	10~20	1 cm@1 m
芬兰	VTT/NIST	640	7-10	0.5	64	4 cm@5 m

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