大动态范围太赫兹频段雷达散射截面测量
作者:
作者单位:

1.天津大学 精密仪器与光电子工程学院 激光与光电子研究所,天津 300072;2.光电信息技术教育部重点实验室,天津大学,天津 300072

中图分类号:

TN95

基金项目:

国家自然科学基金(61675146)


Large-dynamic-range radar-cross-section measurement in the terahertz band
Author:
  • QIAO Hong-Zhan 1,2

    QIAO Hong-Zhan

    Institute of Laser and Optoelectronics, School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China;Key Laboratory of Opto-electronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
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  • ZHONG Kai 1,2

    ZHONG Kai

    Institute of Laser and Optoelectronics, School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China;Key Laboratory of Opto-electronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
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  • SHI Jie 1

    SHI Jie

    Institute of Laser and Optoelectronics, School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
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  • LIU Yang 1,2

    LIU Yang

    Institute of Laser and Optoelectronics, School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China;Key Laboratory of Opto-electronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
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  • LIU Ke-Fei 1,2

    LIU Ke-Fei

    Institute of Laser and Optoelectronics, School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China;Key Laboratory of Opto-electronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
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  • XU De-Gang 1,2

    XU De-Gang

    Institute of Laser and Optoelectronics, School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China;Key Laboratory of Opto-electronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
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  • YAO Jian-Quan 1,2

    YAO Jian-Quan

    Institute of Laser and Optoelectronics, School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China;Key Laboratory of Opto-electronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
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Affiliation:

1.Institute of Laser and Optoelectronics, School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China;2.Key Laboratory of Opto-electronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China

Fund Project:

Supported by the National Natural Science Foundation of China (61675146);

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    摘要:

    针对目前太赫兹频段雷达散射截面(RCS)测量动态范围较小的问题,提出了一种结构分段定标结合数据分段处理的大动态范围RCS获取方法。基于相对定标理论分析了单一定标测量方式对RCS测量范围与测量精度的限制,并通过对光滑金属球与圆柱的实验测量进行了验证。通过光滑金属平板的RCS测量讨论了衰减元件的引入对系统测量精度与测量范围的影响。在此基础上,利用结构分段定标结合数据分段处理对弹头模型的RCS进行了测量,成功获得了弹头模型的主要散射特征,实现了目前已知最高的63 dB动态范围,测量结果与仿真计算结果一致。

    Abstract:

    A method to overcome the problem of limited dynamic range in current radar-cross-section (RCS) measuring systems in the terahertz band was proposed, by adopting structural subsection calibration and data subsection processing. The limitation of onefold calibration on the RCS measurement range and accuracy was analyzed based on the relative calibration theory, and verified by experimental measurement of a smooth metal sphere and a smooth metal cylinder. A smooth metal plate was also used to discuss the effect of using signal attenuators on the system measuring range and accuracy. Finally, the measurement of the RCS of a warhead model was realized by structural subsection calibration combined with data subsection processing, and the main scattering characteristics were successfully recognized. The measuring dynamic range reached 63 dB, which should be the highest as far as we know. The measured results accorded well with the simulation results.

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乔鸿展,钟凯,史杰,刘阳,刘科飞,徐德刚,姚建铨.大动态范围太赫兹频段雷达散射截面测量[J].红外与毫米波学报,2021,40(3):341~346]. QIAO Hong-Zhan, ZHONG Kai, SHI Jie, LIU Yang, LIU Ke-Fei, XU De-Gang, YAO Jian-Quan. Large-dynamic-range radar-cross-section measurement in the terahertz band[J]. J. Infrared Millim. Waves,2021,40(3):341~346.]

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  • 收稿日期:2020-07-08
  • 最后修改日期:2021-05-11
  • 录用日期:2020-10-14
  • 在线发布日期: 2021-04-27
  • 出版日期: 2021-06-25
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