TY JOUR TI Investigation of L-Band Radar Signal Scattering From Ice Cover Using GNSS-R Data KW Bistatic scheme KW Doppler spectrum KW delay-Doppler map KW freshwater ice KW sea ice KW Great Slave Lake KW Sea of Okhotsk KW FY-3E satellite KW kurtosis coefficient KW ice thickness JO Russian Journal of Earth Sciences AU Kovaldov, D.A. AU Karaev, V.Y. AU Titchenko, Y.A. AU Fateev, V.. AU Lopatin, V.. AU Huang, F.. AU Wang, X.. AU Guo, J.. PY 2026 IS 26 PB Geophysical Center of the Russian Academy of Sciences