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Influence of Gaussian Beam on Terahertz Radar Cross Section of a Conducting Sphere

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Abstract

In RCS estimation, usually a plane wave is assumed; while in real measurements at terahertz frequencies, generally a Gaussian beam or a similar beam source is adopted. In this paper, the RCS of a conducting sphere is discussed under the condition that the incident wave is a Gaussian beam. In the estimation, the influence of 2.52 THz collimated laser beam on RCS is discussed and the RCS changing with scattering angle and some other factors is obtained; at the same time, the comparisons between different incident beams, plane wave and Gaussian beam, are also given. The estimation results show that choosing a beam width of 40 mm is appropriate when the sphere radius is 10 mm and the distance between the sphere and the beam source is 1 m.

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Authors and Affiliations

  1. National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, P. O. BOX 3031, No.2 YiKuang Street, Harbin, Heilongjiang, China, 150081

    Hui-Yu Li, Qi Li, Zhi-Wei Xia, Yong-Peng Zhao, De-Ying Chen & Qi Wang

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  1. Hui-Yu Li
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  2. Qi Li
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  3. Zhi-Wei Xia
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  4. Yong-Peng Zhao
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  5. De-Ying Chen
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  6. Qi Wang
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Correspondence to Qi Li.

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Li, HY., Li, Q., Xia, ZW. et al. Influence of Gaussian Beam on Terahertz Radar Cross Section of a Conducting Sphere. J Infrared Milli Terahz Waves 34, 88–96 (2013). https://doi.org/10.1007/s10762-012-9950-6

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  • DOI: https://doi.org/10.1007/s10762-012-9950-6

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