340GHz稀疏MIMO阵列实时3-D成像系统
介绍了一种基于稀疏MIMO(MultipleInputandMultipleOutput)阵列的340GHz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4m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14mm、10mm和12mm,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....
Saved in:
Published in | 红外与毫米波学报 Vol. 36; no. 1; pp. 102 - 106 |
---|---|
Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
中国工程物理研究院电子工程研究所,四川绵阳621999
2017
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%国防科技大学空间电子信息技术研究所,湖南长沙,410073%中国工程物理研究院流体物理研究所,四川绵阳,621999%中国工程物理研究院电子工程研究所,四川绵阳,621999 |
Subjects | |
Online Access | Get full text |
ISSN | 1001-9014 |
DOI | 10.11972/j.issn.1001-9014.2017.01.018 |
Cover
Summary: | 介绍了一种基于稀疏MIMO(MultipleInputandMultipleOutput)阵列的340GHz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4m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14mm、10mm和12mm,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. |
---|---|
Bibliography: | terahertz radar, sparse MIMO, terahertz array, 3-D imaging, stand-off, personal securitydetection 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. CUI Zhen-Mao1,4, GAO Jing-Kun2, LU Bin1,4, CHEN Peng1,4, HE Yue1,4, QIN Yu-Liang2, CHENG Bin-Bin1,4 , |
ISSN: | 1001-9014 |
DOI: | 10.11972/j.issn.1001-9014.2017.01.018 |