By observing laser transmission in sandstorm, it is found that attention decreases with increasing
height and particle impurity. Consider the condition that moisture reaches 50% and the sulfate content is
increased in sand/dust particles. Applying the Mie theory, the relationship between the particle scale and
parameters including absorption, scattering and attenuation efficiency factors of single sand/dust particles is
obtained. Also obtained are the changes in absorption and scattering coefficients of sand/dust group with
different light wavelengths, and the relationship between the attenuation coefficient and the peak radius of the
sand/dust group. The results show that, as water and sulfate content increase, the absorption efficiency factor
increases, scattering efficiency factor decreases, and the total attenuation efficiency factor changes very little.
Optical characteristic of the sand/dust group is the same with signal particles. With changing peak radius,
the attenuation coefficient varies obviously. The attenuation coefficient decreases gradually when the height of
sand/dust aerosol increases.
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