Based on the principle of coherent Doppler velocimetry

a wind-measuring lidar system with 3D scanning function is developed.By constructing the three-wave beam scanning mode and the speed azimuth display algorithm

the dynamic reconstruction of 3D wind field in the atmospheric boundary layer is realized.The synchronous observation test of ground-based radar and 3D laser radar was carried out in Lankao Plain area of Henan Province

and the linear regression model and timing analysis method were used to compare the horizontal wind speed

wind direction and 140m radial wind speed at the 280m height layer.The experimental results show that the horizontal wind speed measurement shows significant linear correlation；the wind direction data maintain high consistency （R2=0.908），but there is local directional deviation；the characteristics of radial wind speed has good synchronization （R2=0.982）。The 3D radar system shows the technical advantages of second-level refresh rate and sub-meter-level spatial resolution

which can accurately capture the low-altitude jet current and wind shear phenomenon.This study verifies the measurement reliability of 3D laser wind measurement technology in flat terrain

and provides a high-precision detection method for micro-site location and wake effect assessment of wind farms.