TY JOUR TI Modeling of Doppler frequency shift in multipath radiochannels KW Doppler effect KW method of normal waves KW modeling KW non-stationary radio channel JO Solnechno-Zemnaya Fizika AU Penzin, M.S. AU Ilyin, N.V. PY 2016 IS 2 PB INFRA-M Academic Publishing LLC.