电控时变电磁材料的SAR成像特性研究

王俊杰 冯德军 王志凇 邢世其 李永祯 王雪松

王俊杰, 冯德军, 王志凇, 等. 电控时变电磁材料的SAR成像特性研究[J]. 雷达学报, 待出版. doi: 10.12000/JR21104
引用本文: 王俊杰, 冯德军, 王志凇, 等. 电控时变电磁材料的SAR成像特性研究[J]. 雷达学报, 待出版. doi: 10.12000/JR21104
WANG Junjie, FENG Dejun, WANG Zhisong, et al. Synthetic aperture rader imaging characteristics of electronically controlled time-varying electromagnetic materials[J]. Journal of Radars, in press. doi: 10.12000/JR21104
Citation: WANG Junjie, FENG Dejun, WANG Zhisong, et al. Synthetic aperture rader imaging characteristics of electronically controlled time-varying electromagnetic materials[J]. Journal of Radars, in press. doi: 10.12000/JR21104

电控时变电磁材料的SAR成像特性研究

doi: 10.12000/JR21104
基金项目: 国家自然科学基金(62071475, 61890542, 62001481)
详细信息
    作者简介:

    王俊杰(1991–),男,博士,讲师,主要研究方向为新材料电磁调控、雷达信号处理与新型电子对抗

    冯德军(1972–),男,研究员,博士生导师,主要研究方向为智能电子对抗、精确制导与目标识别

    王志凇(1988–),男,硕士,主要研究方向为武器装备实验鉴定

    邢世其(1984–),男,博士,副研究员,主要研究方向为极化雷达成像、雷达信号处理与合成孔径雷达对抗

    李永祯(1977–),男,研究员,博士生导师,主要研究方向为极化雷达与电子对抗

    王雪松(1972–),男,教授,博士生导师,主要研究方向为极化雷达、目标识别与电子对抗

    通讯作者:

    王俊杰 wangjunjie14@vip.qq.com

    冯德军 fdj117@sina.com

  • 责任主编:丁泽刚 Corresponding Editor: DING Zegang
  • 中图分类号: TN955

Synthetic Aperture Rader Imaging Characteristics of Electronically Controlled Time-varying Electromagnetic Materials

Funds: The National Nature Science Foundation of China (62071475, 61890542, 62001481)
More Information
  • 摘要: 微动目标因具有在不同方向的运动分量,能够对电磁波进行微多普勒调制,导致目标成像特征出现方位向散焦效应,这种现象在目标识别与反识别领域被广泛关注与研究。相较而言,电控时变电磁材料通过外加激励实现对电磁波特征的灵活调控,具有更快的调制速度,而其成像特性没有被过多关注。该文以此为切入点,对电控时变电磁材料的合成孔径雷达(SAR)图像距离向调制特性进行了研究,分析了时变电磁材料谱变换模型和SAR目标特征控制原理。以相位调制表面(PSS)为代表,建立了非周期PSS相位调制模型,其频谱具有连续频移特性。在此基础上,探讨了PSS连续频移调制对SAR的影响,揭露了距离向目标散焦现象。通过SAR实测数据仿真,验证了所提理论方法的有效性。

     

  • 图  1  电控时变电磁材料

    Figure  1.  Electronically controlled time-varying electromagnetic materials

    图  2  SAR成像模型

    Figure  2.  SAR imaging model

    图  3  非周期PSS相位调制波形

    Figure  3.  Nonperiodic PSS phase modulation waveform

    图  4  非周期PSS波形频谱特性

    Figure  4.  Spectrum characteristics of nonperiodic PSS waveform

    图  5  非周期PSS调制的匹配滤波输出

    Figure  5.  Nonperiodic PSS modulated matched filter output

    图  6  基于非周期PSS调制的SAR成像效果图

    Figure  6.  SAR imaging effect based on aperiodic PSS modulation

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出版历程
  • 收稿日期:  2021-07-22
  • 修回日期:  2021-10-14
  • 网络出版日期:  2021-10-20

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