Abstract: Atmospheric turbulence is widespread in the atmosphere, in which the slant turbulence has a significant impact on aerospace and military activities. On the one hand, the high spatial and temporal resolution wind field data obtained from the coherent Doppler lidar is used. On the other hand, according to the velocity structure function method based on Kolmogorov's local uniform homogeneous theory, i.e. the characteristics of turbulence in the inertial sub-region are only related to the turbulent eddy dissipation rate ε, the velocity structure function method is applied to the lidar glide-path scans mode for aircraft landing period. By fitting the measured data velocity structure function with the model velocity structure function least square, the atmospheric turbulence parameters (wind speed variance, turbulence integration scale and ε, etc) within the lidar swath are estimated. Furthermore, based on the spatial and temporal distribution characteristics of the data in the slant scanning area, the slant spatial distribution of the atmospheric turbulence parameters is presented and compared with the wind-shear intensity data obtained from the lidar glide-path scans mode developed by Ocean University of China. It is found that the two data are in good agreement, which validates the reliabiltiy of the proposed slant turbulence parameter retrieval method.

Key words: coherent Doppler wind measurement lidar, slant atmospheric turbulence, velocity structure function