Evaluating the Performance of Free Space Optical Link in Tropical Climate

Abstract

ABSTRACT

Development of a method of processing images of laser beam bands with the use of parallel­hierarchic networks

“…The advantages of AOCL over existing communication lines are considered, including ease of installation, noise immunity, energy efficiency and the negative effect of the atmosphere on the laser beam. The influence of smoke and fog in the climate of Malaysia is studied in [9], rain, fog and scintillation state [10,11].…”

“…To solve this problem, in [6,7] it is proposed to increase the number of reception and transmission devices by 4 times and 2 times, but this will lead to a rise in price of such a system by 4 and 2 times, respectively. In [9][10][11], the attenuation of the power of a laser beam is studied under conditions of turbulence of the atmosphere of different terrain, which causes beam deformation of various types, as shown (Fig. 2).…”

“…Also, most of the known works do not mention the problem of loss of communication due to the need to adjust the position of the receiver. For example, during the operation of satellite-to-ground AOCL, a constant adjustment of the position of the receiving device relative to the position of the transmitter is necessary, for which the exit of the laser beam beyond the limits of the receiving lens will lead to a complete loss of communication [6][7][8][9][10][11].…”