| 太赫兹极高分辨力雷达成像试验研究 |
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| 引用本文： | 蔡英武, 杨陈, 曾耿华, 等. 太赫兹极高分辨力雷达成像试验研究[J]. 强激光与粒子束, 2012, 24(01): 7-9. |
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| 作者姓名： | 蔡英武 杨陈 曾耿华 黄祥 王成 江舸 李如忠 陶荣辉 张健 周传明 姚军 |
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| 作者单位： | 1.中国工程物理研究院 电子工程研究所, 四川 绵阳 621 900;;;2.中国工程物理研究院, 四川 绵阳 621 900 |
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| 摘 要： | 给出了一种载频0.14 THz、带宽5 GHz的极高分辨力太赫兹雷达成像系统样机。系统采用Ka波段毫米波信号二倍频后作为样机收发链路的谐波混频本振，以线性调频连续波信号作为发射信号，接收时采用去斜接收。利用该太赫兹雷达进行了成像试验并得到了1维距离像与逆合成孔径雷达（ISAR）成像结果。结果表明，THz雷达样机实现了3 cm的高分辨力，其ISAR像清晰，反映了目标的细微特征。
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| 关 键 词： | 太赫兹 宽带雷达 极高分辨力 ISAR成像 |
Experimental research on high resolution terahertz radar imaging |
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| Cai Yingwu, Yang Chen, Zeng Genghua, et al. Experimental research on high resolution terahertz radar imaging[J]. High Power Laser and Particle Beams, 2012, 24: 7-9. |
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| Authors: | Cai Yingwu Yang Chen Zeng Genghua Huang Xiang Wang Cheng Jiang Ge Li Ruzhong Tao Ronghui Zhang Jian Zhou Chuanming Yao Jun |
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| Affiliation: | 1. Institute of Electronic Engineering,CAEP,P.O.Box 919-515,Mianyang 621900,China;;;2. China Academy of Engineering Physics,Mianyang 621900,China |
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| Abstract: | The design and realization of a terahertz(THz) radar system with 0.14 THz carrier frequency and 5 GHz bandwidth have been presented. The Ka band signal was frequency-doubled to be used as the local oscillator signal for sub-harmonic mixer in the systems transceiver chain. For the transmitted signal was a linearly frequency-modulated continuous-wave(LFM-CW), the dechirp technique was used in the THz radar receiver front end. By using this THz radar system, 3 cm high resolution range profiles were obtained as well as inverse synthetic aperture radar(ISAR) images, which exactly represent the subtle features of targets. |
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| Keywords: | terahertz wide-band radar extremely high resolution inverse synthetic aperture radar imaging |
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