TY CONF TI Determination of the velocity and direction of propagation of an internal gravity wave from measurements by three pulsed coherent Doppler lidars KW atmosphere KW internal gravity waves KW lidar JO The XXXI International Symposium "Atmospheric and Ocean Optics. Atmospheric Physics" AU Smaliho, I.N. AU Banah, V.A. AU Falic, A.V. AU Sherstobitov, A.M. PY 2025 PB V.E. Zuev Institute of Atmospheric Optics, Siberian Branch of the Russian Academy of Sciences