In order to obtain the information of wind field and disturbance in the airport in real time,and to ensure the safety of flight,this paper establishes a model to calculate the velocity of the wind field disturbance vect or.Based on the radial velocity simulation of coherent laser echo signal,reliable and effective radi al velocity data can be provided for calculating the vector velocity of the wind field disturbance.In the case o f noise interference,the damping least square algorithm is used to calculate the vector velocity of the w ind field disturbance,and the vector velocity of the wind field disturbance is compared and analyzed under different scanning azimuth intervals.The simulation results show that the scan azimuth interval is smaller,and the errors of calculating results are smaller,too.When the scanning range interval is less than 60°,the mean squared error of the vector velocity of the wind field distur bance is less than 1m/s,and the horizontal disturbance quantity is less than 4°,which lays a good theoretical basis for t he follow-up field tests.