%0 Journal Article %T Estimation of Parameters of Non-stationary Geophysical Signals Based on Two-Stage Approximations Using Local Models %A Гетманов, В.Г. %A Гвишиани, А.Д. %A Пилипенко, В.А. %A Стуков, Д.А. %K geophysical signals, geomagnetic pulsations, estimation, non-stationary parameters, two-stage approximation %J Russian Journal of Earth Sciences %D 2025 %N 25 %P 4 %I Геофизический центр Российской Академии Наук