TY JOUR TI Real-time forecast of MUF for radio paths from current data obtained from oblique sounding with continuous chirp signal KW ionosphere KW oblique ionospheric sounding KW real-time forecast KW radio path KW maximum usable frequency JO Solar-Terrestrial Physics AU Ilyin, N.V. AU Bubnova, T.V. AU Grozov, V.P. AU Penzin, M.S. AU Ponomarchuk, S.N. PY 2018 IS 4 PB INFRA-M Academic Publishing LLC.