电子学报 ›› 2018, Vol. 46 ›› Issue (9): 2283-2290.DOI: 10.3969/j.issn.0372-2112.2018.09.034

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涡旋电磁波及其在雷达中应用研究进展

刘康, 黎湘, 王宏强, 程永强   

  1. 国防科技大学电子科学学院, 湖南长沙 410073
  • 收稿日期:2016-12-07 修回日期:2018-02-28 出版日期:2018-09-25 发布日期:2018-09-25
  • 通讯作者: 刘康
  • 基金资助:
    国家自然科学基金(No.61571011)

The Advances of Vortex Electromagnetic Wave in Radar Applications

LIU Kang, LI Xiang, WANG Hong-qiang, CHENG Yong-qiang   

  1. School of Electronic Science, National University of Defense Technology, Changsha, Hunan 410073, China
  • Received:2016-12-07 Revised:2018-02-28 Online:2018-09-25 Published:2018-09-25

摘要: 涡旋电磁波因携带有轨道角动量信息,相比于传统电磁波有着更高维度的信息调制自由度,在雷达目标检测和成像领域具有很大的应用潜力.本文首先介绍了涡旋电磁波基本概念和线极化条件下的辐射场分布特点.然后给出利用涡旋电磁波进行雷达目标成像和旋转目标检测的工作原理,分析总结了其相对于传统雷达探测技术展现出来的性能优势.接着综述了电磁涡旋成像和旋转多普勒检测的发展历程与研究现状,特别地,面向雷达目标探测需求对涡旋电磁波产生技术进行较为全面的总结和概括.最后,展望涡旋电磁波在雷达中应用的发展前景,指出未来发展中的若干关键科学问题.

关键词: 涡旋电磁波, 轨道角动量, 新体制雷达, 电磁涡旋成像, 旋转多普勒检测

Abstract: Compared with classical electromagnetic (EM) waves,the vortex electromagnetic wave carrying orbital angular momentum (OAM) has higher dimensional information-modulation freedom,which paves the way to the OAM's applications in radar target detection and imaging.Firstly,the concept of vortex EM wave and the radiation field in linear polarization are introduced.Subsequently,the principles of the vortex-EM-wave-based radar imaging and detection are presented.The advantages over traditional radar detection technology are analyzed and elaborated.Moreover,the development history and research actuality of the EM vortex imaging and the rotational Doppler frequency detection are overviewed.Especially,the generation technique of vortex EM waves for radar detection purposes is summarized.Finally,by viewing the prospects for the applications of vortex EM waves,some scientific problems in the development of vortex-EM-wave-based radar are proposed.

Key words: vortex electromagnetic wave, orbital angular momentum, novel radar paradigm, electromagnetic vortex imaging, rotational Doppler detection

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