主动式近距离太赫兹人体安检技术分析  

Analysis of Active Near-Field Terahertz Imaging for Personnel Surveillance

作　　者：乔灵博[1] 王迎新[1] 赵自然[1] 牛轶杰[1] 陈志强[1] 

机构地区：[1]清华大学工程物理系粒子技术与辐射成像教育部重点实验室,北京100084

出　　处：《微波学报》2015年第4期93-96,共4页Journal of Microwaves

基　　金：国家重大科学仪器设备开发专项(2012YQ14003701);国家科技支撑计划(2013BAK14B03)

摘　　要：主动式近距离太赫兹成像技术在人体安检领域已经有了广泛的应用,目前主要有平面扫描、圆柱扫描、扇束扫描三种成像模式。对此三种成像模式的成像原理进行了介绍,对比了不同成像模式的优缺点,同时分析了影响成像质量的因素,从分辨率、信噪比和伪影去除三个方面探讨了提高图像质量的方法,为研发新型主动式近距离太赫兹人体安检设备提供了参考。In recent years,active near-field terahertz imaging has been intensively investigated for personnel surveillance. There are mainly three imaging modes,planar scanning,cylinder scanning and fan-beam scanning. In this paper,the imaging principles of the three modes are introduced and advantages and disadvantages of each mode are also discussed. Moreover,we give an overview of the factors that affecting the image quality. The approaches to achieving better images are analyzed from the aspects of resolution,signal to noise ratio and artifacts removal.

关 键 词：主动式 近距离 太赫兹成像 人体安检 

分 类 号：O441.4[理学—电磁学]