TY CONF TI MATHEMATICAL APPARATUS FOR OBTAINING IQ SAMPLES BY SDR RECEIVERS FOR PROCESSING COMPROMISING EMANATIONS KW IQ sampling KW software-defined radio KW spurious electromagnetic emissions KW signal sampling KW direct Fourier transform JO CHALLENGING ISSUES IN SYSTEMS MODELING AND PROCESSES AU Volkov, A.V. AU Naumenko, N.A. AU Kravchenko, A.S. AU Saharov, S.L. PY 2025 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov