Performance Evaluation of FSO Communications under Sand-Dust Conditions

Abstract EN

Sand-dust weather conditions are considered the primary challenge to free-space optical (FSO) communications.

It may cause severe attenuation that is malignant to FSO link performance.

This study investigates the impact of sand-dust particles on a laser signal using the radiation propagation method and the small-angle approximation method.

Numerical simulation shows that in sand-dust weather conditions, the multiple scattering effect is dominant and results in signal pulse delay and pulse broadening.

Furthermore, the signal attenuation follows a negative exponential distribution to the laser wavelength.

Superior performance can be achieved by employing a longer wavelength laser to reduce pulse delay and mutual interference.