The feasibility of a ground-based lidar using two closely spaced laser beams (with an angular distance of 1°) for high data-rate measurement of wind velocity components is discussed. The proposed technique is based on the correlation analysis of the lidar fluctuations due to atmospheric aerosol backscattering. The double-beam lidar in question offers good promise for studying the wind fine structure within a period as short as 5-20 s. The lidar data processing algorithm developed is shown to be of great computational efficiency.