The Integral Distribution Function of the Kilometric Attenuation of Infrared Radiation in the Atmosphere Fergana Region of the Republic of Uzbekistan

Abstract

The ever-increasing need for the provision of a wide range of services to the end user requires the organization of high-speed communication channels at the “last mile”. One of the obvious solutions to this problem is the use of FTTH (fiber-to-the-home) technology, which has all the capabilities to transfer large amounts of information over long distances. However, this solution does not always satisfy the end user. This is due to the high cost and the need to obtain permission to lay an optical cable, long time for installation and connection. An alternative to this solution is the use of open optical transmission systems (OOTS) technology, also known as Free Space Optics (FSO). The article is devoted to the organization of high-speed communication channels at the “last mile” using the “Free Space Optics - FSO” technology. Advantages and disadvantages of the FSO are given. It is noted that when designing FSO systems by matching the integral distribution function of the kilometer attenuation (IDFKA) of infrared (IR) radiation in the atmosphere of a given geographical region (GR) with the energy resource of the FSO equipment used, the coefficient of readiness of the interval of the atmospheric communication channel (ACCR) is determined. In its turn, the IDFKA depends on the climatic features of the given geographical region where the AC route will take place. In determining the IDFKA, it is proposed to use measurements of the meteorological visibility range (MVR) made at all airports in the world. As an example, the MVR data measured at airports in the Fergana region and IDFKA values obtained on their basis are recommended. It is recommended to use the results obtained in the design and calculation of distances for optimal reception quality using FSO.