Performance improvement of Mie Doppler lidar

The structure of a self-developed Mie Doppler lidar system is introduced. Aiming at the problems existing in the former system, the receiver sub-system, working time series, and scanning mode etc. were upgraded. Experimental results show that the spectrum stability of optical discriminator is improved by 2.8 times. The blind range of detection is eliminated. With 9 000 laser shot integration and 21.2 m vertical resolution, the averaged standard deviation of horizontal wind speed and direction over the altitude from 0 to 2.5 km for three consecutive 10 min measured by the modified Mie Doppler lidar are below 0.43 m/s and 7.7° with the maximum values of 1 m/s and 18.3°, respectively. Comparisons of lidar and wiresonde wind observations show good agreement. With 1 000 laser shot integration