М.А. Belitsky - Post-graduate, JSC "Sozvezdie" Concern -
V.I. Shtefan - General director, JSC - Voronezh research institute "Vega". E-mail: box@vega.techno-r.ru

Communication organization possibility beyond line-of-sight in the optical band is considered which is based on well-known facts of searchlight observation located beyond the horizon, lightning flashes, electric welding radiation beyond line-of-sight. It-s determined by requirements increase to the links, especially in critical applications. Optical communication link generalized model is developed on the basis of the scatter channel for estimation organization possibility of this channel. This model provides as opposed to well-known ones with receiving energy and temporal features of a link taking into account peculiarities of its usage and allow to estimate several generalized parameters under standard conditions of information exchange. Three standard methods are found out on the basis of received results analyze of laser line function simulation and scatter channel. Optical radiation multiple scattering is considered in the shortwave part of the optical band. Standard forms of the received signal for three options of laser line usage on the basis of scatter channel are obtained, received signal power dependence on optic axis angle of slope of the photodetector. It-s shown that in general case received signal form equals scattered component convolution of impulse signal volume with spatial distribution sensitivity of the photodetector. Received signal dependence on laser transmitter radiation divergence will be more noticeable in the long-wave range (more than 1 micron) and affects less in ultraviolet range, when dispersion multiplicity increases greatly.