Volume 15 Issue 5
Oct.  2026
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LI Liulin, ZHOU Hongping, LI Rui, et al. Research progress in rotational Doppler detection and target micromotion measurement using vortex electromagnetic waves[J]. Journal of Radars, 2026, 15(5): 1508–1527. doi: 10.12000/JR26067
Citation: LI Liulin, ZHOU Hongping, LI Rui, et al. Research progress in rotational Doppler detection and target micromotion measurement using vortex electromagnetic waves[J]. Journal of Radars, 2026, 15(5): 1508–1527. doi: 10.12000/JR26067
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Research Progress in Rotational Doppler Detection and Target Micromotion Measurement Using Vortex Electromagnetic Waves

DOI: 10.12000/JR26067 CSTR: 32380.14.JR26067

  • School of Computer and Information, Hefei University of Technology, Hefei 230009, China

Funds:  The National Natural Science Foundation of China (61775050), Anhui Provincial Major Science and Technology Project (2023z04020018)
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    Abstract
  • Traditional radar can detect moving targets. However, when the target velocity vector is perpendicular to the electromagnetic wave propagation direction, effectively obtaining the target’s angular motion information becomes difficult. This results in a detection blind zone for estimating the rotational motion trend of the target. Vortex electromagnetic waves carrying Orbital Angular Momentum (OAM) possess a helical phase structure and an annular radiation pattern. When interacting with rotating targets, these waves can induce a rotational Doppler effect, providing a new approach for acquiring angular motion information. Therefore, target detection methods based on the rotational Doppler effect of vortex electromagnetic waves have attracted extensive attention in recent years. This paper systematically reviews the research progress of rotational Doppler detection techniques using vortex electromagnetic waves, with a particular focus on studies in the microwave band. The reviewed studies include rotational Doppler detection methods based on phase and spectral features, methods based on OAM mode characteristics, and target micromotion detection methods based on vortex electromagnetic waves. Finally, this paper summarizes the major challenges in existing studies and provides an outlook on future research directions and potential applications.

     

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