Attenuation of terahertz transmission through rain |
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| Authors: | Luo Yi Huang Wan-xia and Luo Zi-yi |
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| Affiliation: | College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China;College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China;College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China |
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| Abstract: | Based on the Marshall-Palmer, Weibull raindrop size distribution and Mie electromagnetic scattering model, the relationships
of attenuation coefficient of terahertz (THz) atmospheric window waves with precipitation rate and temperature are studied.
Furthermore, combined with the loss of electromagnetic wave transmission in free space, the attenuation of THz communication
and the transmission of current mobile communication signals through rain are compared and analyzed. The results show that
the attenuation coefficient of THz transmission is increased with increasing precipitation rate, the difference of attenuation
coefficient at different THz window waves is small, and the maximum difference is about 3 dB. The rain attenuation of THz
wave is first decreased and then increased with increasing temperature, but the temperature has little effect on it. The attenuation
of THz wave through rain is much larger than that of mobile communication signal. |
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