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

作者：CUI Zhen Mao; GAO Jing Kun; LU Bin; CHEN Peng; HE Yue; QIN Yu Liang; CHENG Bin Bin; LIU Qiao; HE Xiao Yang; DENG Bin; DENG Xian Jin

来源：红外与毫米波学报, 2017, 36(1).

DOI：10.11972/j.issn.1001-9014.2017.01.018

• terahertz radar
• sparse MIMO
• terahertz array
• 3-D imaging
• stand-off
• personal security detection

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 reflector in elevation to get high cross-range resolution.Each emitter transmits frequency-modulated continuous-wave (FMCW) waveform with 16 GHz bandwidth and high range resolution is achieved by using 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 detected by this 3-D imager.

• 单位
  中国工程物理研究院电子工程研究所