340GHz稀疏MIMO阵列实时3-D成像系统  

Real time 3D imaging system based on sparse MIMO array at 340 GHz

作　　者：崔振茂 高敬坤 陆彬[1,2] 陈鹏[1,2] 何月[1,2] 秦玉亮[3] 成彬彬[1,2] 刘乔[4] 何晓阳[1] 邓彬[3] 邓贤进[1,2] 

机构地区：[1]中国工程物理研究院电子工程研究所,四川绵阳621999 [2]中国工程物理研究院微系统与太赫兹研究中心,四川成都610200 [3]国防科技大学空间电子信息技术研究所,湖南长沙410073 [4]中国工程物理研究院流体物理研究所,四川绵阳621999

出　　处：《红外与毫米波学报》2017年第1期102-106,共5页Journal of Infrared and Millimeter Waves

基　　金：国家重点基础研究发展计划(973计划)支持(2015CB755406)~~

摘　　要：介绍了一种基于稀疏MIMO(Multiple Input and Multiple Output)阵列的340 GHz三维成像系统.系统采用水平放置的4发16收稀疏MIMO阵列配合垂直维的聚束扫描实现方位维的高分辨成像,每个发射通道的波形为16GHz带宽的线性调频连续波信号,通过脉冲压缩实现距离维的高分辨.测试结果表明,在4 m的探测距离(光程)上,成像系统方位向、垂直向和距离向的分辨率分别达到14 mm、10 mm和12 mm,通过对人体隐藏枪支的三维成像实验验证了系统对人体携带危险品的探测能力.A 3-D imaging system based on sparse MIMO （Multiple Input and Multiple Output） array at 340 GHz is presented. The imager incorporates a linear array containing 4 transmitters and 16 receivers （4Tx-16Rx） as electronic beam former in horizontal dimension and an elliptic cylinder as focusing re- flector in elevation to get high cross-range resolution. Each emitter transmits frequency-modulated con- tinuous-wave （FMCW） waveform with 16 GHz bandwidth and high range resolution is achieved by u- sing pulse compression technique. Experimental results indicate that the 3-D imaging resolution is 14 ram, 10mm and 12mm in horizontal direction, vertical direction and range dimension at 4-m distance, respectively. The personal screen experiments also imply that concealed threats such as guns can be de- tected by this 3-D imager.

关 键 词：太赫兹雷达 稀疏MIMO 太赫兹阵列 三维成像 站开式 人体安检 

分 类 号：TN95[电子电信—信号与信息处理]