TY CONF TI ACOUSTIC LOCALIZATION FOR DECENTRALIZED SWARMS OF UNMANNED AERIAL VEHICLES IN THE ABSENCE OF GPS KW acoustic localization KW drone swarm KW navigation without GPS KW nonlinear least squares method KW Trust‑Region Reflective JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES – 2026 AU Shkhagor, M.I. AU Zarevich, A.I. AU Zarevich, M.A. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov