Monte Carlo simulation of atmospheric transmission characteristics in non-line-of-sight ultraviolet communication

The Non-Line-of-Sight (NLOS) ultraviolet (UV) propagation model with Monte Carlo method was described in details. The Model was proved validity by the existed single-scattering model, and the model simulation results were in good agreement with experimental results. Then UV atmospheric transmission characteristics in NLOS UV communication were simulated by Monte Carlo model. As far as the communication system of best working wavelength (about 250 nm) was concerned, influences of communication distance, visibility, wind force, rain rate, and fog etc. on the UV atmospheric transmittance were analyzed. The results demonstrate that UV transmittance decrease with the communication distance enlarged, even more quickly in bad weather condition. The wind force always has no affect on the NLOS UV communication system, and the other weather conditions have little influence on the system when distance is less than one or two hundred meters.