Long-range laser anemometry-a comparative review

Abstract
A review is made of the field of long-range atmospheric wind velocity measurements by laser anemometry. Scattering from atmospheric aerosols of both visible (Ar+) and infrared (CO2) wavelength laser beams with both transit time and Doppler processing are considered. Special attention is paid to the transverse type of measurements required for wind power development as an example and, of many possible systems, a critical assessment is made for selection on grounds of spatial resolution, number of velocity components required, safety, efficiency and cost.