Scattering Properties of Electromagnetic Waves from Randomly Oriented Rough Metal Plate in the Lower Terahertz Region

Chen Gang; Dang Hongxing; Tan Xiaomin; Chen Hui; Cui Tiejun

doi:10.12000/JR17093

Volume 7 Issue 1

Feb. 2018

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Article Navigation > Journal of Radars > 2018 > 7(1): 75-82

WANG Yuqi, SUN Guangcai, YANG Jun, et al. Passive localization algorithm for radiation source based on long synthetic aperture[J]. Journal of Radars, 2020, 9(1): 185–194. doi: 10.12000/JR19080

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Chen Gang, Dang Hongxing, Tan Xiaomin, Chen Hui, Cui Tiejun. Scattering Properties of Electromagnetic Waves from Randomly Oriented Rough Metal Plate in the Lower Terahertz Region[J]. Journal of Radars, 2018, 7(1): 75-82. doi: 10.12000/JR17093

WANG Yuqi, SUN Guangcai, YANG Jun, et al. Passive localization algorithm for radiation source based on long synthetic aperture[J]. Journal of Radars, 2020, 9(1): 185–194. doi: 10.12000/JR19080

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Scattering Properties of Electromagnetic Waves from Randomly Oriented Rough Metal Plate in the Lower Terahertz Region

DOI: 10.12000/JR17093

①.
China Academy of Space Technology (Xi’an), Xi’an 710000, China
②.
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China

Funds: The National Ministries Foundation

Received Date: 2017-10-30
Rev Recd Date: 2018-01-04

Available Online: 2018-01-25

Publish Date: 2018-02-28

Abstract

Abstract

An efficient hybrid algorithm is proposed to analyze the electromagnetic scattering properties of an infinitely thin metal plate in the lower terahertz (THz) frequency region. In this region, the metal plate can be viewed as a perfect electrically conductive object with a marginally rough surface. Hence, the THz scattered field from the metal plate can be divided into coherent and incoherent parts. The physical optics and truncated-wedge incremental-length diffraction coefficients methods are used to compute the coherent part, whereas the small perturbation method is used to compute the incoherent part. Then, the radar cross section of the rough metal plate surface is computed by the multilevel fast multipole and proposed hybrid algorithms. The numerical results show that the proposed algorithm has a good accuracy when rapidly simulating the scattering properties in the lower THz region.
- Terahertz scattering,
- Physical optics,
- Truncated-wedge incremental-length diffraction coefficients,
- Small perturbation method,
- Radar cross section

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References(11)

References

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沈阳化工大学材料科学与工程学院沈阳 110142

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