Volume 7 Issue 1
Feb.  2018
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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
Citation: 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

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

doi: 10.12000/JR17093
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
  • 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.

     

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