Micro-Motion Feature Extraction of Spinning Target Based on Angular Doppler Effect

Rui LI; Kaiming LI; Qun ZHANG; Jia LIANG; Ying LUO

doi:10.11999/JEIT200595

Volume 43 Issue 3

Mar. 2021

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Article Navigation > Journal of Electronics & Information Technology > 2021 > 43(3): 547-554

Rui LI, Kaiming LI, Qun ZHANG, Jia LIANG, Ying LUO. Micro-Motion Feature Extraction of Spinning Target Based on Angular Doppler Effect[J]. Journal of Electronics & Information Technology, 2021, 43(3): 547-554. doi: 10.11999/JEIT200595

Citation:

Rui LI, Kaiming LI, Qun ZHANG, Jia LIANG, Ying LUO. Micro-Motion Feature Extraction of Spinning Target Based on Angular Doppler Effect[J]. Journal of Electronics & Information Technology, 2021, 43(3): 547-554. doi: 10.11999/JEIT200595

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Micro-Motion Feature Extraction of Spinning Target Based on Angular Doppler Effect

doi: 10.11999/JEIT200595

Rui LI^{1
,
,},
Kaiming LI¹,
Qun ZHANG^{1, 2},
Jia LIANG¹,
Ying LUO^{1, 2}

1.
Institute of Information and Navigation, Air Force Engineering University, Xi’an 710077, China
2.
Key Laboratory of Wave Scattering and Remote Sensing Information, Fudan University, Shanghai 200433, China

Funds: The National Natural Science Foundation of China(61971434, 61631019, 61701530), The Natural Science Basic Research Program of Shaanxi Province (2020JM-348)

Received Date: 2020-07-20
Rev Recd Date: 2021-01-24

Available Online: 2021-02-06

Publish Date: 2021-03-22

Abstract

Abstract

Vortex ElectroMagnetic (EM) wave with Orbital Angular Momentum (OAM) is widely concerned in radar applications. With vortex EM wave, not only the linear Doppler shift of the target can be observed, but also the angular Doppler shift information can be obtained. Based on the angular Doppler effect, the vortex EM wave radar has the ability to detect the component perpendicular to the radial motion, and can extract the micro-motion features of the spinning target. Firstly, the parametric model of angular Doppler shift in Cartesian coordinate system is established, and the quantitative relationship among vortex EM wave radar, target motion parameters and angular Doppler shift is provided. Then, when the target rotational trajectory is perpendicular to the radar Line Of Sight (LOS), the angular Doppler shift is analyzed, and the micro-motion features of the spinning target are extracted. Finally, experimental results are given to demonstrate the effectiveness of the proposed method and the correctness of the theoretical analyses.
- Angular Doppler effect,
- Spinning target,
- Micro-motion feature,
- Vortex ElectroMagnetic (EM) wave,
- Orbital Angular Momentum (OAM)

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References(28)

References

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