TY JOUR TI Orthogonal Basis Synthesis at a Finite Time Interval for Digital Signal Processing with Limited Spectrum KW function basis decomposition KW orthogonal basis KW approximation KW synthesis and analysis of signals KW digital signal processing JO Intellectual Technologies on Transport AU Khodakovsky, V.A. AU Korotchenko, V.D. PY 2025 IS 0 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"