The attenuation coefficient of the radio signal in the frequency range of 0.8-10 GHZ at extremely low ambient temperatures

It is widely known that the climatic conditions of operation of all technical systems without exception have a significant impact on the quality, reliability and service life. Currently, insufficient attention is paid to the study of the peculiarities of the operation of communication systems and the mode of propagation of radio signals in the regions of the North. Meanwhile, the climatic conditions of operation of communication systems in the Northern regions of Russia are very specific, these regions are not only characterized by extremely low atmospheric temperatures, but also by the presence of a number of features of the manifestation of weather conditions, in particular such as extremely thick ice fog (pogonip) in the winter, the combination of negative temperatures and rain in the spring and autumn periods, etc. The paper deals with the impact of extremely low ambient temperatures, as well as hydrometeors on the attenuation of radio waves in the frequency range 800 MHz-10 GHz, which is the most popular and promising for technical progress. The aim of the study is to calculate the dependence of the attenuation coefficient of the radio signal in the frequency range of 0.8-10 GHz on the temperature of the propagation medium at extremely low values of the latter. Research methods: analytical, based on analysis of scientific literature on the impact of climatic factors on the attenuation of radio waves and model-based development of the applied computer program for calculating attenuation of radio waves. Conducted a survey of scientific literature on the impact of temperature and hydrometeors on radio propagation for the considered frequency range. The developed applied computer program for calculation of coefficient of attenuation of intensity of radio signals is presented. According to this program, the radio wave intensity attenuation coefficient for the temperature range from 0 °C to -60 °C and its frequency dependence were calculated. It is found that the decrease in atmospheric temperature increases the attenuation coefficient of radio waves. In particular, for a radio frequency of 6 GHz, lowering the air temperature from 0 °C to -60 °C leads to an increase in the attenuation factor of 1.5 times. The temperature dependence of the attenuation coefficient is further enhanced by increasing the frequency of the radio signal.

radio signals, attenuation of radio waves, centimeter radio waves, decimeter radio waves, radio communications, frequency dependence, programming, calculations, attenuation coefficient of radio signals, hydrometeors, atmospheric temperature

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