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首页> 外文期刊>Terahertz Science and Technology, IEEE Transactions on >A Fast 220-GHz Real Aperture 3-D Personnel Screening System With a Novel-Shaped Mirror Design
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A Fast 220-GHz Real Aperture 3-D Personnel Screening System With a Novel-Shaped Mirror Design

机译：具有新颖镜面设计的快速220 GHz实孔径3D人员检查系统

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摘要

Terahertz systems have attracted much attention recently in the field of public security due to the high penetration of terahertz waves through clothes and the high resolution of terahertz images. A novel real aperture terahertz personnel screening system is demonstrated in this paper. This system uses a single transmitter and receiver pair together with a quasi-optical system to irradiate and collect the terahertz waves. In the quasi-optical system, a novel design of a shaped reflector, used as the main mirror, helps reach a satisfying focus and meanwhile keep the beam direction invariant. By using this main mirror and a hexagonal cylindrical scanning mirror, a fast horizontal scan of 0.6-m field of view can be accomplished within 10 ms. The vertical scan is realized by a customized translation stage. The whole system is able to finish a full-body scan of a person within 2.9 s with a cross-section resolution of better than 8 mm.
机译：太赫兹系统最近在公共安全领域引起了极大的关注，这是因为太赫兹波在衣服中的高度穿透以及太赫兹图像的高分辨率。本文展示了一种新颖的真实孔径太赫兹人员筛选系统。该系统使用单个发射器和接收器对以及一个准光学系统来照射和收集太赫兹波。在准光学系统中，用作主镜的定型反射镜的新颖设计有助于达到令人满意的聚焦效果，同时保持光束方向不变。通过使用该主镜和六边形柱面扫描镜，可以在10 ms内完成0.6 m视场的快速水平扫描。垂直扫描是通过定制的翻译平台实现的。整个系统能够在2.9 s内完成对人体的全身扫描，其横截面分辨率优于8 mm。

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