TY JOUR TI Methods of calculating influence of seasonality factor on propagation of radio waves in southern regions of Russia close to hydrospheric objects in ultra-high frequency range KW radio wave propagation KW seasonal features KW tropospheric waveguide KW drive waveguide KW cellular communication systems KW design KW signal attenuation level KW evaporation waveguide KW superrefraction JO Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics AU Pishchin, O.. AU Puzankov, D.. AU Liydkina, K.. PY 2022 IS PB Astrakhan State Technical University