| 频率步进太赫兹脉冲成像技术研究 |
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| 引用本文： | 胡伟东, 张萌, 武华锋, 等. 频率步进太赫兹脉冲成像技术研究[J]. 强激光与粒子束, 2013, 25: 1605-1608. doi: 10.3788/HPLPB20132506.1605 |
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| 作者姓名： | 胡伟东 张萌 武华锋 邹旸 孙厚军 吕昕 |
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| 作者单位： | 1.北京理工大学 毫米波与太赫兹技术北京市重点实验室, 北京 1 00081 ;;;2.西安电子工程研究所, 西安 71 01 00 |
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| 摘 要： | 针对太赫兹频段具有大带宽的特点，阐述了太赫兹波段进行高分辨力成像的原理，按照微波上变频的方法，将微波源通过混频和倍频方式得到太赫兹频率源；采用频率步进脉冲体制，设计和实现了220 GHz太赫兹主动成像系统；并在暗室和外场进行了分辨力测试和拉距实验，获得的纵向分辨力达4 cm，测试距离达10 m。
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| 关 键 词： | 太赫兹 频率步进 一维成像 二维逆合成孔径雷达成像 三维成像 |
| 收稿时间： | 2012-12-11 |
| 修稿时间： | 2013-01-15 |
Research on step-frequency terahertz pulses imaging technology |
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| Hu Weidong, Zhang Meng, Wu Huafeng, et al. Research on step-frequency terahertz pulses imaging technology[J]. High Power Laser and Particle Beams, 2013, 25: 1605-1608. doi: 10.3788/HPLPB20132506.1605 |
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| Authors: | Hu Weidong Zhang Meng Wu Huafeng Zou Yang Sun Houjun Lv Xin |
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| Affiliation: | 1. Beijing Key Laboratory of Millimeter-Wave and Terahertz Technology,Beijing Institute of Technology,Beijing 100081,China;;;2. Xi’an Electronics Engineering Institute,Xi’an 710100,China |
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| Abstract: | Wide band can be achieved in terahertz (THz) spectrum, so a high resolution terahertz imaging system can be realized according to the radar imaging theory. The stepped THz pulse is obtained by mixing and multiplying the microwave source, and a 220 GHz terahertz active imaging system is designed and developed. The resolution experiments of two reflectors imaging are performed in an anechoic chamber, and the range experiment is done outdoor, which shows that the resolution is up to 4 cm and the range reaches 10 m. |
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| Keywords: | terahertz step-frequency 1D imaging 2D ISAR imaging 3D imaging |
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