UV Wind Measurement Lidar Double-Edge Filter Dectection

Because of its high sensitivity and accuracy in last years , the wind measurement Doppler lidar has developed very quickly and has the greatly applied foreground. Especially in the clean atmosphere where there is little aerosols, the lidar has the greatly applied value to the wind measurement. This topic talks about the direct-detection lidar which gets the wind velocity of the clean atmosphere with which wave length is 355nm.According to the background, this topic uses the direct-detection principle. The direct-detection technique that adopts the edge technique or the double-edge technique has the high-accuracy and resolving-power to get the wide wind field.This paper introduces the principle of the Doppler lidar wind measurement, the direct-detection technique , the key part-the double edge technique and the detection of double-edge filter . The mainly working as follows:Firstly, on the foundation of the clean atmosphere above the sea, we get the change between the scatter of the atmosphere and the distance. By the calculation of the etalon HWHM we get its ideal number value.Secondly, this paper designs the parts of this system including the laser receives system, control and the processing system, especially the main parts of the laser and etalon. Then the index of this system is confirmed by calculating.Thirdly, with the experiment of detecting the F-P etalon, we get the curve of the transparence.At last, through the analysis of effect with the laser incidence angle, radiation angle, surface quality and the parallel, the paper introduces the design to analysis and performance of the Fabry-Perot etalon for the direct-detection wind measurement Doppler lidar.