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Abstract :
Wireless ultraviolet communication is a new
type of communication technology, which uses the
atmosphere as the transmission medium, and uses the
scattering effect of atmospheric molecules and aerosol
particles to change the propagation direction of the
optical signal carrying information, bypass the blocking
obstacles and finally reach the receiving end. The study of
the scattering characteristics of ultraviolet light requires
the use of scattering phase function. The scattering phase
function is the ratio of the scattering energy in the unit
solid angle in a specific direction to the average scattering
energy in all directions. The scattering of ultraviolet light
by the atmosphere is usually divided into two cases :
Rayleigh scattering and Mie scattering. Therefore, the
scattering phase function is also divided into two cases :
Rayleigh scattering phase function and Mie scattering
phase function. The scattering phase function in this
paper is obtained by the weighted average of the two.
There are many empirical formulas for Rayleigh
scattering phase function and Mie scattering phase
function. In this paper, the ultraviolet light of 266 nm
wavelength is taken as an example to simulate and analyze
the variation trend of scattering coefficient with
wavelength and visibility, and the influence of the
combination of different scattering phase functions on the
received light power per unit area in the process of
ultraviolet atmospheric transmission.
Xiang Sen, Tong Shoufeng, Liu Chuan, Zhang Peng The mechanism of typical aerosol particles on laser atmospheric transmission [J] Journal of Changchun University of Science and Technology (Natural Science Edition), 2023, 46 (04): 1-10
Wireless ultraviolet communication is a new
type of communication technology, which uses the
atmosphere as the transmission medium, and uses the
scattering effect of atmospheric molecules and aerosol
particles to change the propagation direction of the
optical signal carrying information, bypass the blocking
obstacles and finally reach the receiving end. The study of
the scattering characteristics of ultraviolet light requires
the use of scattering phase function. The scattering phase
function is the ratio of the scattering energy in the unit
solid angle in a specific direction to the average scattering
energy in all directions. The scattering of ultraviolet light
by the atmosphere is usually divided into two cases :
Rayleigh scattering and Mie scattering. Therefore, the
scattering phase function is also divided into two cases :
Rayleigh scattering phase function and Mie scattering
phase function. The scattering phase function in this
paper is obtained by the weighted average of the two.
There are many empirical formulas for Rayleigh
scattering phase function and Mie scattering phase
function. In this paper, the ultraviolet light of 266 nm
wavelength is taken as an example to simulate and analyze
the variation trend of scattering coefficient with
wavelength and visibility, and the influence of the
combination of different scattering phase functions on the
received light power per unit area in the process of
ultraviolet atmospheric transmission.