Analysis of the Effect of Rain Attenuation to the Optical Communication

Abstract

Atmosphere laser communication, as a very good wireless communication method, has been studied by so many people theoretically and experimentally since the invention of laser. In the atmosphere laser communication system the effect of different weather conditions to the transmission was different, there was no theoretical formula of the effect of rainfall to laser communication and only the empirical formula could be achieved by plenty of observations. Since the parameters of empirical formula from different literatures were different, in this article rainfall attenuation was simulated according to the empirical formula under different parameters and the results differed. It was proved that the conditions to the empirical formula could not be incarnated in the formula itself, large numbers of tests were needed to make sure that the parameters were confirmed. In this article rain attenuation under normal weather conditions was presented with some familiar parameters.