| 一种0.34 THz站开式三维成像安检仪 |
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| 引用本文： | 经 文,安健飞,成彬彬,陈 鹏,何 月,陆 彬. 一种0.34 THz站开式三维成像安检仪[J]. 太赫兹科学与电子信息学报, 2018, 16(5): 757-762 |
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| 作者姓名： | 经 文 安健飞 成彬彬 陈 鹏 何 月 陆 彬 |
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| 作者单位： | Institute of Electronic Engineering，China Academy of Engineering Physics，Mianyang Sichuan 621999，China,a.Institute of Electronic Engineering；b.Microsystem & Terahertz Research Center，China Academy of Engineering Physics，Mianyang Sichuan 621999，China,a.Institute of Electronic Engineering；b.Microsystem & Terahertz Research Center，China Academy of Engineering Physics，Mianyang Sichuan 621999，China,a.Institute of Electronic Engineering；b.Microsystem & Terahertz Research Center，China Academy of Engineering Physics，Mianyang Sichuan 621999，China,a.Institute of Electronic Engineering；b.Microsystem & Terahertz Research Center，China Academy of Engineering Physics，Mianyang Sichuan 621999，China and a.Institute of Electronic Engineering；b.Microsystem & Terahertz Research Center，China Academy of Engineering Physics，Mianyang Sichuan 621999，China |
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| 摘 要： | 介绍了一种太赫兹站开式大视角三维成像雷达系统。系统可用于人体隐藏危险品的成像检测，采用二维非均匀逐点扫描的工作方式，视场范围达到0.6 m×1 m，成像速度达到2 s。系统工作于0.34 THz，采用直径450 mm椭球镜聚焦，在5.8 m的成像距离实现了2 cm的方位分辨力。为了改善回波动态范围，采用相位噪声相消的系统结构。系统采用调频连续波(FMCW)雷达线性调频信号作为工作波形，工作带宽达到12 GHz。成像结果显示，系统校正后的距离分辨力可达到2 cm，能够实现隐藏危险品的有效检测。
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| 关 键 词： | 站开式成像；太赫兹成像；视场；线性度校正 |
| 收稿时间： | 2017-08-28 |
| 修稿时间： | 2018-05-14 |
A 0.34 THz 3D imaging radar for standoff personal screening |
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| JING Wen,AN Jianfei,CHENG Binbin,CHEN Peng,HE Yue and LU Bin. A 0.34 THz 3D imaging radar for standoff personal screening[J]. Journal of Terahertz Science and Electronic Information Technology, 2018, 16(5): 757-762 |
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| Authors: | JING Wen AN Jianfei CHENG Binbin CHEN Peng HE Yue LU Bin |
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| Abstract: | A summary of a 0.34 THz standoff 3D imaging radar is presented which can be used for through-clothes imaging of person-borne concealed objects. Using a two dimensional non-uniform point-by-point scanning mode, a field of view of 0.6 m×1 m and 2 s imaging speed is achieved. The central frequency is 0.34 THz, and a 2 cm azimuth resolution at 5.8 m is obtained by using a ellipsoid with a diameter of 450 mm. In order to improve the dynamic range of the system, a phase noise cancellation structure is adopted. The Frequency-Modulated Continuous-Wave(FMCW) radar technique with a 12 GHz bandwidth is employed in the system. Imaging result shows that 2 cm range resolution can be achieved after calibration and the system can be utilized to detect concealed weapons. |
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