Influence of Scattering on Laser Communication

Atmospheric laser communications use a laser beam as a carrier of information transmission, atmospheric laser communication technology use atmosphere as the transmission medium to transmit voice, data, images and other information in the space directly, As a flexible and convenient new communications technology, laser communications has become a hot topic in today’s world communication technology and has very broad prospects for development, but the quality of the laser communication is influenced by atmospheric channel, atmospheric attenuation refers to the weakening of the laser signal energy due to atmospheric absorption and scattering. Paper analyse the influence of scattering on laser communication, getting the relation between laser signal attenuation and transmitting distance, work wavelength and visibility. The laser signal attenuation is simulated from different wavelength, different transmitting distance and different visibility. It turns out that the signal degradation caused by atmosphere scattering is stronger as the work wavelength turn longer, laser signal attenuation decreases with the increase of visibility, and the signal degradation improve as increasing transmitting distance, so choosing long work wavelength, short transmitting distance and good visibility can improve the quality of laser communication.