Experimental Study on Ultraviolet Optical Communication Noise

Ultraviolet (UV) wireless communication is a new method that uses 200 nm–280 nm “solar-blind”-band ultraviolet light as a carrier. It can realize nonline-of-sight (NLOS) communication in complex environments through the scattering of atmospheric molecules and aerosol particles. Under different weather conditions, the bit error rate and path loss of a UV optical communication system change with the particle concentration, particle size, and geometric parameters of the transmitter and receiver in the atmosphere. At different altitudes and times, the bit error rate and path loss of UV optical communication systems change with the concentration of atmospheric molecules and amount of background noise. In this study, the channel characteristics of the UV light scattering intensity distribution and path loss of different rainfall intensities, fog concentrations, and sand and dust types were studied using single-scattering and multiple-scattering UV communication link transmission models. The specific research contents are as follows: