Large field-of-view Luneburg lens electromagnetic imaging super-resolution research

Yang Meiling; Xie Shuguo; Zhang Shenda; Feng Rongguang; Yang Yan

doi:10.11884/HPLPB202436.230383

Volume 36 Issue 4

Feb. 2024

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Article Navigation > High Power Laser and Particle Beams > 2024 > 36(4): 043017

Yang Meiling, Xie Shuguo, Zhang Shenda, et al. Large field-of-view Luneburg lens electromagnetic imaging super-resolution research[J]. High Power Laser and Particle Beams, 2024, 36: 043017. doi: 10.11884/HPLPB202436.230383

Citation:

Yang Meiling, Xie Shuguo, Zhang Shenda, et al. Large field-of-view Luneburg lens electromagnetic imaging super-resolution research[J]. High Power Laser and Particle Beams, 2024, 36: 043017. doi: 10.11884/HPLPB202436.230383

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Large field-of-view Luneburg lens electromagnetic imaging super-resolution research

doi: 10.11884/HPLPB202436.230383

Electromagnetic Compatibility Research Institute, School of Electronic and Information Engineering, Beihang University, Beijing 100191, China

Received Date: 2023-08-30
Accepted Date: 2024-01-13
Rev Recd Date: 2024-01-05

Available Online: 2024-03-18

Publish Date: 2024-02-29

Abstract

Abstract

Due to extensive electromagnetic radiation or interference, the rapid detection and location of electromagnetic interference sources in a large space has become a hot issue to be studied urgently. Electromagnetic imaging technology can visually display the location of radiation sources and solve the problem of rapid detection and localization of electromagnetic interference sources. However, the existing reflector electromagnetic imaging system is bulky and cannot meet the requirements of airborne, vehicle-mounted, UAV and other application platforms. To address this issue, this paper studies the structure and imaging characteristics of Luneburg lens, designs a large field-of-view Luneburg lens electromagnetic imaging (EMI) system, and realizes rapid identification and location of EMI with the advantages of large field of view, wide bandwidth and high resolution. In this paper, the parameters of the 300 mm Luneburg lens with spherical core are calculated, the E-field intensity distribution of the 4～18GHz is simulated, and the space invariant imaging characteristics of Luneburg lens and its super-resolution algorithm are verified. The paper finally compares the volume, field of view, source number and resolution of the parabolic reflector electromagnetic imaging system and the Luneburg lens electromagnetic imaging system. The results demonstrate the superiority of the system proposed in this paper, achieving a large field of view with azimuth and elevation angles of 40° at the same resolution.
- large field of view,
- Luneburg lens,
- space invariant,
- super-resolution

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References(16)

References

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