Design And Implementation Of The Signal Processing Board For Doppler Wind Lidar

Doppler wind lidar is an efficiency tool of measuring atmosphere wind field, Using Doppler effect is considered as one of the most advanced technology of measuring wind field. Doppler wind lidar is widely used in the field of measuring wind field because of its high precision,real time and large measuring range.The article discusses how to realize the Doppler frequence and the speed of the wind based on the Doppler wind lidar technical requirements of Digital signal processing.First of all,it simply introduces the main theory and means of Doppler wind lidar.And then,gose with the basic configuration chart of the high speed A/D collecting board.After that the main job of the article is explaining the hardware configuration and the realization of the arithmetic,including the FFT calculating of the Doppler signal,the theory of nonrelative accumulate,Seek mode,maximum selection and the design of the communication through UART and USB in FPGA. The emulate results of VisualDSP++ and QuartusⅡprove the feasibility of the design.