Analysis and Comparison of Multiple Beam Lidars for Wind Measurement

The multiple beam wind lidar measures the vertical profiles of wind velocity by tracking the particulate structures,or the spatial variations in the particulate concentration(or more precisely,in the scattering intensity).The results depend upon the large-scale particulate structure and the assumption of frozen turbulence.The lidar device is relatively simple and not expensive.In this paper,two methods of the multiple beam lidar for the wind measurement are analyzed and compared.One method uses the correlations of lidar signals from multiple lines of sight.Another method uses the ratio of Fourier transforms of two multibeam lidar signals.The latter enables the measurement of the horizontal wind vector using a relatively fast computational algorithm.